{"title":"Marine Parts \u0026 Accessories Collection: All products for your boat needs","description":"\u003ch3\u003eAll products available\u003c\/h3\u003e\n\u003cp\u003eExplore our vast collection of high-quality products ranging from electronics, home goods, fashion items, beauty products, and more. From everyday essentials to unique finds, we have something for everyone.\u003c\/p\u003e\n\u003ch3\u003eNew arrivals weekly\u003c\/h3\u003e\n\u003cp\u003eStay updated with the latest trends and innovations with our weekly new arrivals. Discover fresh products across various categories to enhance your lifestyle and keep up with the ever-changing market.\u003c\/p\u003e\n\u003ch3\u003eGreat deals and discounts\u003c\/h3\u003e\n\u003cp\u003eEnjoy exclusive deals and discounts on a wide range of products. Shop smart and save big on your favorite items while experiencing top-notch customer service and fast shipping. Don't miss out on our limited-time offers!\u003c\/p\u003e","products":[{"product_id":"se121-complete-1-36-ratio-side-water-inlet-replaces-bravo-one","title":"SE121 Complete 1.36 Ratio Side Water Inlet (Replaces Bravo One)","description":"\u003csection class=\"mpc-bravo1-complete\"\u003e\n  \u003ch2\u003eBravo One Complete Replacement Sterndrive\u003c\/h2\u003e\n  \u003cp\u003e\n    MarinePartsCo offers the \u003cstrong\u003eBravo One complete replacement unit\u003c\/strong\u003e, \n    engineered for performance and reliability.  \n    Rated for up to \u003cstrong\u003e425 HP\u003c\/strong\u003e, this unit is designed to keep your boat running strong.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eNot a replacement\u003c\/strong\u003e for Bravo X, XR, or XZ drives.  \n    Install Kit and Anode Kit are \u003cstrong\u003enot included\u003c\/strong\u003e — please see related items below.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"SEI Marine","offers":[{"title":"New","offer_id":43194132430959,"sku":"SE121_Complete_1.36_Ratio_(Side_Water_Inlet)","price":3595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/se121-complete-165-ratio-side-water-inlet-2988549.png?v=1758646116"},{"product_id":"se121-complete-1-50-ratio-side-water-inlet-replaces-bravo-one","title":"SE121 Complete 1.50 Ratio Side Water Inlet (Replaces Bravo One)","description":"\u003csection class=\"mpc-bravo1-complete\"\u003e\n  \u003ch2\u003eBravo One Complete Replacement Sterndrive\u003c\/h2\u003e\n  \u003cp\u003e\n    MarinePartsCo offers the \u003cstrong\u003eBravo One complete replacement sterndrive\u003c\/strong\u003e, \n    built to OEM specifications for strength and reliability.  \n    Rated for up to \u003cstrong\u003e425 HP\u003c\/strong\u003e, this unit is designed for dependable performance season after season.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eNot a replacement\u003c\/strong\u003e for Bravo X, XR, or XZ drives.  \n    Install Kit and Anode Kit are \u003cstrong\u003enot included\u003c\/strong\u003e — see related items below.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"SEI Marine","offers":[{"title":"New","offer_id":43194901889135,"sku":"SE121_Complete_1.5_Ratio_(Side_Water_Inlet)","price":3595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/se121-complete-165-ratio-side-water-inlet-2988549.png?v=1758646116"},{"product_id":"se121-complete-1-65-ratio-side-water-inlet-replaces-bravo-one","title":"SE121 Complete 1.65 Ratio Dual Water Inlet (Replaces Bravo One)","description":"\u003csection class=\"mpc-bravo1-complete\"\u003e\n  \u003ch2\u003eBravo One Complete Replacement Sterndrive\u003c\/h2\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eBravo One complete replacement sterndrive\u003c\/strong\u003e is built to deliver OEM-level\n    performance and durability. Rated for up to \u003cstrong\u003e425 HP\u003c\/strong\u003e, this drive is ideal for\n    boaters who need reliable power and strength on the water.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eNot compatible\u003c\/strong\u003e with Bravo X, XR, or XZ drives.  \n    Install Kit and Anode Kit are \u003cstrong\u003enot included\u003c\/strong\u003e — please see related items below.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"SEI Marine","offers":[{"title":"New","offer_id":43194966245487,"sku":"SE121_Complete_1.65_Ratio_(Dual_Water_Inlet)","price":3595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/se121-complete-165-ratio-side-water-inlet-2988549.png?v=1758646116"},{"product_id":"se121-complete-1-36-ratio-dual-water-inlet-replaces-bravo-one","title":"SE121 Complete 1.50 Ratio Dual Water Inlet (Replaces Bravo One)","description":"\u003csection class=\"mpc-bravo1-complete\"\u003e\n  \u003ch2\u003eBravo One Complete Replacement Sterndrive\u003c\/h2\u003e\n  \u003cp\u003e\n    MarinePartsCo offers the \u003cstrong\u003eBravo One complete replacement sterndrive\u003c\/strong\u003e, built to OEM standards\n    for strength, performance, and reliability. Designed to handle up to \u003cstrong\u003e425 HP\u003c\/strong\u003e, this drive is a trusted\n    choice for boaters needing a durable replacement unit.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eNot a replacement\u003c\/strong\u003e for Bravo X, XR, or XZ drives.  \n    Install Kit and Anode Kit are \u003cstrong\u003enot included\u003c\/strong\u003e — please see related items below.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"SEI Marine","offers":[{"title":"New","offer_id":43194995540079,"sku":"SE121_Complete_1.5_Ratio_(Dual_Water_Inlet)","price":3595.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/se121-complete-165-ratio-side-water-inlet-2988549.png?v=1758646116"},{"product_id":"se121-complete-1-36-ratio-side-water-inlet-replaces-bravo-one-copy","title":"SE121 Complete 1.36 Ratio Dual Water Inlet (Replaces Bravo One)","description":"\u003csection class=\"mpc-bravo1-complete\"\u003e\n  \u003ch2\u003eBravo One Complete Replacement Sterndrive\u003c\/h2\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eBravo One complete replacement sterndrive\u003c\/strong\u003e is engineered for \n    OEM-quality performance and durability. Rated for up to \u003cstrong\u003e425 HP\u003c\/strong\u003e, \n    it provides reliable power and strength for a wide range of marine applications.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eNot compatible\u003c\/strong\u003e with Bravo X, XR, or XZ drives.  \n    Install Kit and Anode Kit are \u003cstrong\u003enot included\u003c\/strong\u003e — please see related items below.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"SEI Marine","offers":[{"title":"New","offer_id":43194998161519,"sku":"SE121_Complete_1.36_Ratio_(Dual_Water_Inlet)","price":3595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/se121-complete-165-ratio-side-water-inlet-2988549.png?v=1758646116"},{"product_id":"se206-replaces-most-mercury-2-0l-2-4l-and-2-5l","title":"SE206 (Replaces most Mercury 2.0L, 2.4L and 2.5L)","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE206 Gear Case\u003c\/strong\u003e replaces most Mercury 2.0L, 2.4L, and 2.5L gear cases with a \u003cstrong\u003e4-3\/4\" bullet diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The drive does not come with an anode or installation kit.\u003c\/p\u003e\n\u003cp\u003eFits most Mercury outboards with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2:1 or 1.87\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20, and 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43198503223407,"sku":"90-206","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-206-2089527.jpg?v=1758646231"},{"product_id":"90-205-lower-unit","title":"Mercury Replacement Lower Unit |  ALL |  ALL |  2 Stroke |  90-205","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07 \u0026amp; 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\", and 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke, 2 stroke, DFI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201835958383,"sku":"90-205","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a20-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  20\" |  2 Stroke |  90-205-A20","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201835991151,"sku":"90-205-A20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a20d-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  20\" |  DFI |  90-205-A20D","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e DFI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836023919,"sku":"90-205-A20D","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a20f-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  20\" |  4 Stroke |  90-205-A20F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836056687,"sku":"90-205-A20F","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a25-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  25\" |  2 Stroke |  90-205-A25","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836089455,"sku":"90-205-A25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a25d-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  25\" |  DFI |  90-205-A25D","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e DFI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836122223,"sku":"90-205-A25D","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-a25f-lower-unit","title":"Mercury Replacement Lower Unit |  2.07 |  25\" |  4 Stroke |  90-205-A25F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836154991,"sku":"90-205-A25F","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  2 Stroke |  90-205-B20","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836187759,"sku":"90-205-B20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20d-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  DFI |  90-205-B20D","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e DFI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836220527,"sku":"90-205-B20D","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20f-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  4 Stroke |  90-205-B20F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836253295,"sku":"90-205-B20F","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20m-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  2 Stroke |  90-205-B20M","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication : 2\u003c\/strong\u003e-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836286063,"sku":"90-205-B20M","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20s-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  4 Stroke |  90-205-B20S","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836318831,"sku":"90-205-B20S","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b20t-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  20\" |  4 Stroke |  90-205-B20T","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836351599,"sku":"90-205-B20T","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b25-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  25\" |  2 Stroke |  90-205-B25","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836384367,"sku":"90-205-B25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b25d-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  25\" |  DFI |  90-205-B25D","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e DFI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836417135,"sku":"90-205-B25D","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-205-b25f-lower-unit","title":"Mercury Replacement Lower Unit |  2.33 |  25\" |  4 Stroke |  90-205-B25F","description":"\u003cdiv class=\"rte\"\u003e\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cp\u003eReplaces most \u003cstrong\u003eMercury 3- \u0026amp; 4-cylinder 2-Stroke\u003c\/strong\u003e (1987 and newer), \u003cstrong\u003e70–125 HP\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eAlso replaces most \u003cstrong\u003e75–115 HP 4-Stroke models\u003c\/strong\u003e below serial # \u003ccode\u003eOT801000\u003c\/code\u003e.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cem\u003eImportant:\u003c\/em\u003e This unit will \u003cstrong\u003enot replace a 3-jaw lower unit\u003c\/strong\u003e unless you also change the shift shaft in the midsection.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"SEI Marine","offers":[{"title":"Default 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midsection.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.33\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836482671,"sku":"90-205-B25S","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-205-b25s-2676896.webp?v=1758646230"},{"product_id":"90-206-a20-lower-unit","title":"Mercury Replacement Lower Unit |  1.87 |  20\" |  2 Stroke |  90-206-A20","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE206 Gear Case\u003c\/strong\u003e replaces most Mercury 2.0L, 2.4L, and 2.5L gear cases with a \u003cstrong\u003e4-3\/4\" bullet diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The drive does not come with an anode or installation kit.\u003c\/p\u003e\n\u003cp\u003eFits most Mercury outboards with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1:87\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836646511,"sku":"90-206-A20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-206-a20-4869777.jpg?v=1758646231"},{"product_id":"90-206-a25-lower-unit","title":"Mercury Replacement Lower Unit |  1.87 |  25\" |  2 Stroke |  90-206-A25","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE206 Gear Case\u003c\/strong\u003e replaces most Mercury 2.0L, 2.4L, and 2.5L gear cases with a \u003cstrong\u003e4-3\/4\" bullet diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The drive does not come with an anode or installation kit.\u003c\/p\u003e\n\u003cp\u003eFits most Mercury outboards with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1:87\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836679279,"sku":"90-206-A25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-206-a25-7313334.jpg?v=1758646231"},{"product_id":"90-206-b20-lower-unit","title":"Mercury Replacement Lower Unit |  2.1 |  20\" |  2 Stroke |  90-206-B20","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE206 Gear Case\u003c\/strong\u003e replaces most Mercury 2.0L, 2.4L, and 2.5L gear cases with a \u003cstrong\u003e4-3\/4\" bullet diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The drive does not come with an anode or installation kit.\u003c\/p\u003e\n\u003cp\u003eFits most Mercury outboards with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836712047,"sku":"90-206-B20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-206-b20-8843002.jpg?v=1758646230"},{"product_id":"90-206-b25-lower-unit","title":"Mercury Replacement Lower Unit |  2.1 |  25\" |  2 Stroke |  90-206-B25","description":"\u003cdiv class=\"rte\"\u003e\n  \u003cp\u003e\u003cstrong\u003eSE206 Gear Case\u003c\/strong\u003e replaces most Mercury 2.0L, 2.4L, and 2.5L gear cases with a \u003cstrong\u003e4-3\/4\" bullet diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The drive does not come with an anode or installation kit.\u003c\/p\u003e\n\n  \u003cp\u003eFits most Mercury outboards with:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2:1\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836744815,"sku":"90-206-B25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-206-b25-5019282.jpg?v=1758646230"},{"product_id":"90-216-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 3.0 Liter|  90-216","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836777583,"sku":"90-216","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-9286802.jpg?v=1758646229"},{"product_id":"90-216-a20-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.75 |  20\" |  2 Stroke |  90-216-A20","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836810351,"sku":"90-216-A20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-7547156.png?v=1758646230"},{"product_id":"90-216-a25-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.75 |  25\" |  2 Stroke |  90-216-A25","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836843119,"sku":"90-216-A25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-a25-8332605.jpg?v=1758646229"},{"product_id":"90-216-a30-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.75 |  25\" |  2 Stroke |  90-216-A30","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836875887,"sku":"90-216-A30","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-a30-7229750.jpg?v=1758646230"},{"product_id":"90-216-as-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.75 |  AS |  2 Stroke |  90-216-AS","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836908655,"sku":"90-216-AS","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-as-3668498.jpg?v=1758646229"},{"product_id":"90-216-b20-lower-unit","title":"Mercury 3.0L Replacement Lower Unit |  1.62 |  20\" |  2 Stroke |  90-216-B20","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836941423,"sku":"90-216-B20","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-b20-5881517.jpg?v=1758646229"},{"product_id":"90-216-b25-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.62 |  25\" |  2 Stroke |  90-216-B25","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201836974191,"sku":"90-216-B25","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-b25-5849390.jpg?v=1758646229"},{"product_id":"90-216-bs-lower-unit","title":"Mercury 3.0L Replacement Lower Unit | 1.62 |  25\" |  2 Stroke |  90-216-BS","description":"\u003cp\u003e\u003cstrong\u003eSE216 Replaces most Mercury 3.0L Lower Units\u003c\/strong\u003e (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13 Spline one-piece drive shaft.\u003c\/li\u003e\n\u003cli\u003eIf you have an 8 Spline drive shaft, you will need to buy the stub shaft unit and buy an upper driveshaft from an OE dealer. \u003cbr\u003e\u003cem\u003e25\" 45-823901A 1\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or buy the correct part (\u003cstrong\u003eSEI part number 96-116-12K\u003c\/strong\u003e).\u003c\/p\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837006959,"sku":"90-216-BS","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-216-bs-1354912.png?v=1758646229"},{"product_id":"90-218-lower-unit","title":"Mercury Replacement Lower Unit |  ALL |  2 Stroke |  90-218","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. Fits 20, 25, 30, and 1.75 and 1.62 ratios (choose the product type)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837039727,"sku":"90-218","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-7547156.png?v=1758646230"},{"product_id":"90-218-a25-lower-unit","title":"Mercury Replacement Lower Unit |  1.75 |  25\" |  2 Stroke |  90-218-A25","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. 25\" Shaft with 1.75 Ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837072495,"sku":"90-218-A25","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-b25-7046762.jpg?v=1758646230"},{"product_id":"90-218-a30-lower-unit","title":"Mercury Replacement Lower Unit |  1.75 |  30\" |  2 Stroke |  90-218-A30","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. 30\" shaft CXXL with 1.75 Ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837105263,"sku":"90-218-A30","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-b25-7046762.jpg?v=1758646230"},{"product_id":"90-218-as-lower-unit","title":"Mercury Replacement Lower Unit |  1.75 |  AS |  2 Stroke |  90-218-AS","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. Stub Shaft with 1.75 gear ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837138031,"sku":"90-218-AS","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-as-1292743.png?v=1758646230"},{"product_id":"90-218-b25-lower-unit","title":"Mercury Replacement Lower Unit |  1.62 |  25\" |  2 Stroke |  90-218-B25","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. 25\" shaft with 1.62 ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837170799,"sku":"90-218-B25","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-b25-7046762.jpg?v=1758646230"},{"product_id":"90-218-bs-lower-unit","title":"Replacement Mercury Lower |  1.62 |  2 Stroke |  90-218-BS","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE218\u003c\/strong\u003e Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below). Does not replace the Torque Master, Torque Master 2, or the Sport Master. Stub Shaft with 1.62 Ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable with a 25 or 30 inch (13 spline) one-piece drive shaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have an \u003cstrong\u003e8-spline drive shaft\u003c\/strong\u003e, you will need to buy the stub shaft unit and purchase an upper driveshaft from an OE dealer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25\" — \u003ccode\u003e45-823901A 1\u003c\/code\u003e\n\u003c\/li\u003e\n\u003cli\u003e30\" — \u003ccode\u003e45-824115A 1\u003c\/code\u003e \u003cem\u003e(no longer available from the OE; you will need to source a used one or repair your old drive)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you have a \u003cstrong\u003e13-spline two-piece shaft\u003c\/strong\u003e, simply buy the appropriate one-piece shaft from the drop-down box above.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEI 218 gear cases\u003c\/strong\u003e are supplied with the correct water tube coupling for units with a serial number of \u003ccode\u003eOG438000\u003c\/code\u003e and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (\u003ccode\u003eSEI 96-116-12K\u003c\/code\u003e).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837203567,"sku":"90-218-BS","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-218-bs-4297965.png?v=1758646230"},{"product_id":"90-221-lower-unit-2","title":"Mercury Replacement Lower Unit |  2 Stroke |  90-221","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20, 25, \u0026amp; 30\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.08, 1.85, and 1.75 2 \u0026amp; 4 Stroke\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837269103,"sku":"90-221","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-9367489.png?v=1758646230"},{"product_id":"90-221-lower-unit-4","title":"Mercury Replacement Lower Unit | Verado | 90-221","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20, 25, \u0026amp; 30\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.08, 1.85, and 1.75 2 \u0026amp; 4 Stroke\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837367407,"sku":"90-221","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-7644851.png?v=1758646230"},{"product_id":"90-221-a20-lower-unit-2","title":"Mercury Replacement Lower Unit |  20\" |  1.75 |  90-221-A20","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837432943,"sku":"90-221-A20","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a20-4770587.png?v=1758646230"},{"product_id":"90-221-a20f-lower-unit-2","title":"Mercury Replacement Lower Unit |  20\" |  1.75 |  90-221-A20F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75 Four-Stroke\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837498479,"sku":"90-221-A20F","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a20f-5793594.png?v=1758646230"},{"product_id":"90-221-a25-lower-unit-2","title":"Mercury Replacement Lower Unit |  25\" |  1.75 |  90-221-A25","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837564015,"sku":"90-221-A25","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a25-2838930.png?v=1758646230"},{"product_id":"90-221-a25f-lower-unit-2","title":"Mercury Replacement Lower Unit |  25\" |  1.75 |  90-221-A25F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 25\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837662319,"sku":"90-221-A25F","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a25f-1369108.png?v=1758646230"},{"product_id":"90-221-a30-lower-unit-2","title":"Mercury Replacement Lower Unit |  30\" |  1.75 |  90-221-A30","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 30\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837727855,"sku":"90-221-A30","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a30-4093420.png?v=1758646230"},{"product_id":"90-221-a30f-lower-unit-2","title":"Mercury Replacement Lower Unit |  30\" |  1.75 |  90-221-A30F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 30\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.75\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837826159,"sku":"90-221-A30F","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-a30f-7975158.png?v=1758646177"},{"product_id":"90-221-b20f-lower-unit-2","title":"Mercury Replacement Lower Unit |  20\" |  1.85 |  90-221-B20F","description":"\u003cdiv class=\"rte\"\u003e\n\u003ch2\u003eSE221 Gearcase Overview\u003c\/h2\u003e\n\u003cp\u003eThe SE221 gearcases are designed to fit three different engine families. Carefully review compatibility to ensure proper fit. \u003cstrong\u003eNote:\u003c\/strong\u003e This unit does not include the install kit or anode kit. See related items below for add-ons.\u003c\/p\u003e\n\u003ch3\u003e3.0 Liter – V6 – Two Stroke (13 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20, 221-A25, 221-A30\u003c\/li\u003e\n\u003cli\u003eTransitioned from SE216 to SE221 around serial # \u003cstrong\u003e1B504989\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKnown as the “Verado Style” gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Torque Master, Torque Master 2, or Sport Master\u003c\/li\u003e\n\u003cli\u003eSE221 features a 15-spline prop shaft (vs. 19-spline “Fat Shaft”)\u003c\/li\u003e\n\u003cli\u003eReferred to as the “Standard” or Fleet Master gearcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2.6 Liter – Inline 6 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-A20F, 221-A25F, 221-A30F, 221-B20F, 221-B25F, 221-B30F\u003c\/li\u003e\n\u003cli\u003eCompatible with 200–300 HP Verado inline 6 models\u003c\/li\u003e\n\u003cli\u003eReplaces \u003cstrong\u003e4.8 Torpedo\u003c\/strong\u003e units only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e 5.44 Torpedo, Torque Master, or Sport Master gearcases\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Around 2019, Mercury released new V6\/V8 engines branded “Verado” — these are not compatible with SE221\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1.7 Liter – Inline 4 Cylinder – Four Stroke (20 spline drive shaft)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModels: SEI 221-C20F, SEI 221-C25F\u003c\/li\u003e\n\u003cli\u003eFits 135–200 HP supercharged Verado inline 4 models\u003c\/li\u003e\n\u003cli\u003eNo optional gearcases beyond standard or counter-rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e Non-Verado inline 4 models in this horsepower range (these are not supercharged, though visually similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShaft Length:\u003c\/strong\u003e 20\"\u003cbr\u003e\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 1.85\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SEI Marine","offers":[{"title":"Default Title","offer_id":43201837924463,"sku":"90-221-B20F","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3274\/0207\/files\/90-221-b20f-8549557.png?v=1758646177"}],"url":"https:\/\/marinepartsco.com\/collections\/all.oembed?page=25","provider":"MarinePartsCo","version":"1.0","type":"link"}