This SEI Marine Lower Unit Clutch Dog is a direct replacement for Mercruiser I, R, MR, Alpha I, and Alpha I Gen II sterndrives from 1973 to present.
Manufactured to precise OEM standards, it ensures smooth and reliable gear engagement while reducing wear on forward and reverse gears.
Replaces OEM part numbers 52-853594T and 52-853594.
Built from hardened marine-grade steel, this clutch dog provides long service life and dependable performance in both freshwater and saltwater conditions.
Product Features
- Manufacturer: SEI Marine
- Application: Mercruiser I, R, MR, Alpha I, Alpha I Gen II (1973–Present)
- Type: Lower Unit Clutch Dog
- OEM Part #: 52-853594T, 52-853594
- Fitment: Direct replacement for original Mercury / Mercruiser clutch dog
- Material: Hardened marine-grade steel for durability
- Performance: Ensures precise forward/reverse engagement and minimal gear wear
- Condition: 100% brand-new SEI Marine replacement part
- Warranty: 3-Year Fault-Free Warranty by SEI Marine
Additional Information
Note: Designed for all Mercruiser Alpha 1 & Alpha 1 Gen II sterndrives and compatible with I, R, and MR models (1973 and newer).
For best results, replace clutch dog during lower unit rebuilds or when gear engagement issues occur.
All related lower unit components are available upon request.
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 and serial number to ensure proper fitment before ordering.
