This SEI Marine 25" (XL) BigFoot Driveshaft is a direct replacement for Mercury & Mariner 4-Stroke EFI 40–60 HP outboards equipped with the BigFoot lower unit.
Designed with a 17-spline upper, this driveshaft restores proper engagement and smooth driveline operation for BigFoot models requiring OEM #45-875222A1.
Perfect for repairing worn or damaged driveshafts on both Mercury and Mariner EFI BigFoot platforms.
Product Features
- Fits Mercury / Mariner 4-Stroke EFI 40–60 HP
- 25" XL BigFoot application
- 17-spline configuration
- Direct OEM replacement for 45-875222A1
- Engineered to OEM tolerances for precise fitment
- Brand: SEI Marine
Additional Information
Complete rebuild components—bearings, seals, gears, hardware—are available upon request.
If you need additional parts for a full lower unit rebuild, contact us for assistance.
Shipping Information
Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
A PayPal money request will be sent for any additional shipping charges.
(Some items may be excluded from international shipping.)
Customer Support
For questions or compatibility confirmation, email: customerservice@marinepartswarehouse.com
Please include your engine model number.
