This SEI Marine Complete Gear Set is a direct aftermarket replacement for Yamaha 150 HP 4-Stroke outboards manufactured from 2004 to present.
Designed for counter-rotation lower units, this precision-engineered gear set features a 2:1 gear ratio and 14/28 tooth count, providing optimal torque transfer, quiet performance, and OEM-level reliability. SEI’s premium construction ensures long-term durability and seamless compatibility with factory components.
Product Features
- Direct OEM Replacement: Replaces Yamaha OE# 63P-45551-00-00, 64P-45570-01-00, and 64P-45560-01-00
- Fitment: Yamaha 150 HP 4-Stroke Outboards (2004–Present)
- Engine Compatibility: 150 HP 4-Stroke models
- Gear Ratio: 2:1
- Tooth Count: 14/28
- Rotation: Counter (Left-Hand)
- Condition: 100% brand-new SEI Marine replacement gear set
- Warranty: 3-Year Fault-Free Warranty provided by SEI Marine
Additional Information
Note: All parts required for a complete lower unit rebuild are available upon request, even if not listed online.
If you need additional components for your rebuild, please email or fill out the contact form and we will assist you in locating everything needed.
Shipping Information
SHIPPING: Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
You will receive an email and a PayPal money request for the additional shipping charges at the email address provided.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com .
Please include your engine model number to help confirm proper fitment before ordering.
