Sierra Trim and Tilt Units
Sierra 18-2341-1-9 Power Trim Bushing for MerCruiser Alpha One Gen II - 8-Pack
Sierra 18-2463 Power Trim Cylinder Rear Anchor Pin Kit for Mercruiser Stern Drives
Sierra 18-6273-1 Power Tilt and Trim Assembly for Mercury/Mariner Outboard Motors
Sierra Trim and Tilt Units: OEM-Grade Reliability for Your Outboard
Trim and tilt units are among the hardest-working components on any outboard-powered boat. The trim and tilt motor adjusts the angle of your outboard engine, changing the pitch of your boat in the water — directly affecting ride smoothness, how well your hull grips the surface, and your boat's ability to get on plane efficiently. When this system fails, so does your day on the water. That's why choosing a replacement from a trusted manufacturer matters.
Sierra has earned its reputation as one of the marine industry's most dependable aftermarket parts suppliers, with over 50 years of experience producing engine and drive components. Sierra trim and tilt units carry that same pedigree — engineered to meet or exceed the original equipment parts they replace, and built to handle the demands of today's high-horsepower outboard engines in the harsh marine environment.
Broad Engine Compatibility
One of the standout strengths of Sierra's trim and tilt lineup is its extensive cross-reference coverage. Sierra designs its parts to fit a wide range of leading engine brands, including Mercury/MerCruiser, Yamaha, Johnson/Evinrude, Chrysler/Force, and Volvo Penta, among others. Whether you're sourcing a replacement tilt and trim motor for a vintage OMC V6 or a modern Yamaha four-stroke, Sierra maintains detailed OEM part number cross-references so you can confirm an exact match before ordering. Products like the 18-6777 (compatible with Chrysler/Force and Mercury Marine engines), the 18-6783 (for Yamaha outboards), and the 18-6779 tilt and trim assembly demonstrate just how deep Sierra's compatibility catalog runs.
What Sets Sierra Trim and Tilt Units Apart
- OEM-equivalent engineering: Every Sierra trim and tilt unit is built to meet or exceed the original equipment specification for form, fit, and function.
- Corrosion-resistant construction: Components are engineered using materials that stand up to the harsh saltwater and freshwater marine environment.
- Complete assemblies and relay kits: Sierra offers not just motors, but complete power trim assemblies, relay assemblies, and tilt senders — covering the full system rather than just one piece of the puzzle.
- Trusted by OEM builders: Sierra supplies many OEM engine manufacturers and boat builders, a testament to the quality and consistency of their parts.
- Industry-leading warranty: All Sierra parts are backed by Sierra's Customer Satisfaction Warranty, covering defects in workmanship and materials for the useful life of the product.
Keeping Your Trim System in Top Shape
A well-functioning trim and tilt system isn't just about convenience — proper trim angle directly affects fuel efficiency, hull performance, and long-term engine health. Running with incorrect trim puts unnecessary stress on your drivetrain and can reduce propeller efficiency. Replacing a worn or failed unit with a Sierra trim and tilt assembly restores proper hydraulic function and smooth motor operation, getting you back on the water with confidence.
Browse the full selection of Sierra Trim and Tilt Units to find the right replacement for your engine. For Sierra's complete marine parts catalog, visit the Sierra brand page. To explore trim and tilt units from all available brands, see the full Trim and Tilt Units category.
