Upgrading or repairing the shift mechanism on your Mercury outboard just got simpler with the Sierra 18-2154 shift bus. This precision-engineered component serves as a direct replacement for the OEM Mercury 55-513 part, ensuring smooth gear engagement and reliable performance on the water. Whether you’re dealing with worn-out bushings causing sloppy shifts or performing routine maintenance, this durable piece restores factory-like operation to your engine’s lower unit.
Why Choose the Sierra 18-2154 Shift Bus?
Exact OEM Fitment: Designed to match Mercury specifications, it slides seamlessly into place without modifications, saving you time during installation.
High-Quality Materials: Constructed from robust, corrosion-resistant materials that withstand saltwater exposure, freshwater splashes, and the rigors of frequent use.
Enhanced Durability: Outperforms stock bushings in high-stress environments, reducing wear on surrounding shift rods and linkages for longer service life.
Cost-Effective Reliability: Delivers Mercury-level performance at a fraction of dealer prices, ideal for DIY boaters and professional mechanics alike.
Perfect Compatibility for Mercury Outboards
The Sierra 18-2154 is tailored for a wide range of Mercury engines, typically fitting 4-cylinder to 6-cylinder models from 50HP up to 150HP. It’s commonly used in gearcases where the shift rod interfaces with the lower unit assembly. Boaters often pair it with other Sierra engine parts for complete rebuilds, ensuring all components work in harmony.
