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Yamaha Replacement Lower Unit | 2.00 | 30" | 4 Stroke | 90-428-B30F
SEI Marine
MPN : 90-428-B30F
Overview & Technical Specs
| Product Overview | |
|---|---|
| Fits | Yamaha |
| Unit Type | Lower Unit |
| Warranty | 3 Year Fault Free Warranty |
| Weight | 75.0 lb |
| Item Condition | New |
| Technical Specifications | |
| Combustion | 4 Stroke |
| Gear Ratio | 2 |
| Rotation | Counter |
| Shaft Length | 30" |
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 | 30" | 4 Stroke | 90-428-B30F
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 — 30″ 4-Stroke | 2.00 Ratio
Restore smooth, dependable performance. This premium Yamaha replacement lower unit is a direct-fit alternative to the OEM gearcase. Built to factory specifications and delivered fully assembled, it’s engineered for durability, reliable shifting, and long service life on the water.
Highlights
- Direct replacement — fits Yamaha 4-Stroke outboards requiring a 30″ shaft
- 2.00 gear ratio — ensures correct power transfer and factory-matched performance
- Fully assembled — water pump & all internal components pre-installed
- OEM-quality engineering — precision-machined gears, shafts, and bearings
-
Part #
90-428-B30F— premium aftermarket replacement gearcase
Compatibility Note: Confirm your outboard requires a 30″ shaft lower unit with a 2.00 gear ratio. Rotation and model-year specifics may apply on certain engines.
Application
Compatible with Yamaha 4-Stroke outboards requiring a 30″ shaft and 2.00 gear ratio. Please verify your engine’s model, year, gear ratio, and rotation before ordering.
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.