This SEI Marine Trim Cylinder is a direct replacement for Mercruiser Alpha One sterndrives manufactured from 1972–1991.
Designed for 16-3/16" cylinder applications, this unit replaces both port and starboard OEM trim cylinder part numbers and can be ordered for either side as needed.
Built to OE specifications for proper trim function, alignment, and long-term reliability.
Product Features
- Direct OEM Replacement: Replaces Mercruiser OE# 14034A3 (Starboard) and 14035A3 (Port)
- Fitment: Mercruiser Alpha One drives (1972–1991)
- Side Compatibility: Available for Port or Starboard positions
- Cylinder Length: 16-3/16"
- Condition: 100% brand-new SEI Marine replacement trim cylinder
- Warranty: 3-Year Fault-Free Warranty by SEI Marine
Additional Information
If your current trim cylinder has a different hose configuration or length, please verify before ordering.
All rebuild components are available upon request, even if not listed online.
If additional parts are required, please email or complete the contact form and we will assist 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 compatibility confirmation, email: customerservice@marinepartswarehouse.com
Please include your engine model number.
