This SEI Marine driveshaft is a direct replacement for Mercury & Mariner 2-Stroke DFI (Optimax) 75–115 HP outboards.
Designed for 20" (L) 13-spline applications, it restores proper driveline performance and is manufactured to OEM specifications for a precise fit.
Product Features
- Fits Mercury / Mariner 3- & 4-cylinder DFI (Optimax)
- Compatible with 75–115 HP two-stroke models
- 20" (L) driveshaft
- 13 spline
- OEM replacement for 45-888933A1
- Quality marine-grade construction
- Brand: SEI Marine
Additional Information
Complete rebuild parts—including seals, bearings, gears, and hardware—are available upon request.
Contact us if you need a full rebuild parts list.
Shipping Information
Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
A follow-up email and PayPal request will be sent for any additional 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.
