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Yamaha Replacement Lower Unit | 2.00 | 25" | 4 Stroke | 90-418-B25FS
SEI Marine
MPN : 90-418-B25FS
Overview & Technical Specs
| Product Overview | |
|---|---|
| Fits | Yamaha |
| OEM Part # | 6HR-45300-13-8 |
| Unit Type | Lower Unit |
| Warranty | 3 Year Fault Free Warranty |
| Weight | 65.0 lb |
| Item Condition | New |
| Technical Specifications | |
| Combustion | 4 Stroke |
| Gear Ratio | 2 |
| Rotation | Counter |
| Shaft Length | 25" |
Increments of 1
Minimum of 1
Maximum of
10Low stock
10In stock, ready to ship
Sale price
$1,395.00 USD
-100%
Regular price
Regular price
$1,395.00 USD
Unit price
per
Yamaha Replacement Lower Unit | 2.00 | 25" | 4 Stroke | 90-418-B25FS
Sale price
$1,395.00 USD
Regular price
Regular price
$1,395.00 USD
Unit price
per
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Description
Yamaha® Outboard Replacement Lower Unit — 25″ 4-Stroke | 2.00 Ratio
Restore factory performance. This premium Yamaha replacement lower unit is engineered for strength, durability, and a precise OEM-style fit. Built to factory specifications, the complete gearcase arrives fully assembled and ready to install for dependable operation on the water.
Highlights
- Direct replacement — fits Yamaha 4-Stroke outboards with a 25″ shaft
- 2.00 gear ratio — correct power transfer and smooth performance
- Pre-assembled unit — water pump & internal components installed
- OEM-level quality — precision-machined gears and shafts for long service life
-
Part #
90-418-B25FS— premium aftermarket replacement
Compatibility Note: Ensure your engine requires a 25″ shaft lower unit with a 2.00 gear ratio. Rotation and model-year specifics may apply on certain engines.
Application
Designed for Yamaha 4-Stroke outboards requiring a 25″ shaft lower unit with a 2.00 gear ratio.
Before you order, please verify:
- Engine model and model year
- Shaft length (25″)
- Gear ratio (2.00)
- Rotation (if applicable)
Need help confirming fitment? Contact us for quick application assistance.
Yamaha® is a registered trademark of Yamaha Motor Co., Ltd. Use of the name is for reference only and does not imply affiliation or endorsement.