This SEI Marine Counter-Rotation Propshaft is a precision-engineered replacement for MerCruiser Alpha One sterndrives manufactured between 1972 and 1990.
Built to OEM specifications, this propshaft ensures smooth operation, proper alignment, and long-lasting performance in counter-rotating lower units.
It replaces OEM 814606-1 and is manufactured from high-strength, corrosion-resistant marine steel for durability and reliability in saltwater or freshwater applications.
Covered by SEI’s 3-Year Fault-Free Warranty, this component is designed for dependable power transmission and extended service life.
Product Features
- Direct OEM Replacement: Replaces MerCruiser OE# 814606-1
- Fitment: MerCruiser Alpha One sterndrives (1972–1990)
- Rotation: Counter-Rotation (Left-Hand)
- Function: Lower unit propshaft for reverse rotation drives
- Construction: High-strength, corrosion-resistant marine-grade steel
- Condition: 100% brand-new SEI Marine replacement component
- Warranty: 3-Year Fault-Free Warranty provided by SEI Marine
Additional Information
Note: Designed for counter-rotating Alpha One lower units only.
If you require standard-rotation propshafts or complete lower unit rebuild kits, please email or fill out the contact form and we will assist you in locating the correct parts.
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.
