This SEI Marine Driveshaft is a precision-engineered replacement for MerCruiser MR and Alpha One sterndrives manufactured between 1982 and 1990 (serial numbers 0D469858 and below).
Built to OEM specifications, this driveshaft ensures smooth torque transfer, proper alignment, and durable operation in marine environments.
It replaces OEM 45-42634 and is designed for use with the SE106 lower unit.
Constructed from high-strength, corrosion-resistant steel, this shaft delivers reliable performance and longevity under demanding conditions.
Covered by SEI’s 3-Year Fault-Free Warranty, it offers dependable operation for sterndrive rebuilds and replacements.
Product Features
- Direct OEM Replacement: Replaces MerCruiser OE# 45-42634
- Fitment: MerCruiser MR and Alpha One sterndrives (1982–1990)
- Serial Number Range: 0D469858 and below
- Application: Driveshaft for SE106 lower units
- Construction: High-strength 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 use on MR and Alpha One drives within the specified serial range.
If you require additional drivetrain or lower unit components for your SE106 assembly, 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.
