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Yamaha Replacement Lower Unit | 2.00 | 25" | 4 Stroke | 90-428-B25F
SEI Marine
MPN : 90-428-B25F
Overview & Technical Specs
| Product Overview | |
|---|---|
| Fits | Yamaha |
| 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 | 90-428-B25F
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
Part # 90-428-B25F
Restore factory performance. This premium, direct-fit lower unit is built to OEM specifications for Yamaha 4-Stroke outboards requiring a 25″ shaft and 2.00 gear ratio. It arrives fully assembled with the water pump and internal components installed, delivering smooth shifting, reliable operation, and long service life.
Product Summary
- Direct replacement for Yamaha 4-Stroke outboards with a 25″ shaft
- 2.00 gear ratio for factory-matched performance
- Ships fully assembled — install and go
- OEM-level engineering — precision-machined gears, shafts, and bearings
- Durable black finish; can be refinished to match your engine
Fitment: Verify your engine’s model, year, rotation, shaft length (25″), and gear ratio (2.00) before ordering.
Need help confirming fitment? Contact us.
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.