Upgrade your boat’s performance with this brand-new SEI / Mercruiser Alpha One Gen II Complete Sterndrive Assembly, designed to replace most MerCruiser sterndrives manufactured between 1991 and 2003. Built for 4-cylinder, V6, and V8 engines up to 300 HP, this unit offers exceptional reliability, performance, and value—backed by a 3-Year Fault-Free Warranty from SEI.
Product Features
- Direct Replacement: Fits most MerCruiser Alpha One Gen II applications (1991–2003)
- Engine Compatibility: Works with 4-cylinder, V6, and V8 engines up to 300 horsepower
- Warranty Coverage: 3-Year Fault-Free Warranty provided directly by SEI (no coverage for applications exceeding 300 HP)
- Complete Assembly: Includes both upper and lower units; ships conveniently in two boxes
Installation Options:
- Compatible with your existing install kit (bolts connecting upper and lower units can be reused)
- Optional Complete Install Kit – $45.00
- Optional Anode Kit – $56.80
Specifications
- Power Rating: Up to 300 HP
- Rotation: Standard (Right-Hand)
- Fits MerCruiser Alpha One Gen II (1991–2003)
- Condition: 100% Brand New SEI Replacement Unit
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 any questions, please email us at customerservice@marinepartswarehouse.com.
Please include your sterndrive model and serial numbers to help confirm compatibility before ordering.
Why Choose SEI?
SEI sterndrives are known for quality engineering, easy installation, and outstanding reliability at an affordable price. Whether you’re repowering your boat or replacing a worn-out drive, SEI’s Alpha One Gen II offers smooth shifting, durable performance, and peace of mind backed by one of the best warranties in the marine industry.
