Sierra 18-2154
Shipping (3PM)
Within 30 days
Sierra 18-2154 Product Description
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.
Common Applications:
- Inline 4-cylinder outboards (e.g., 90-120HP series)
- V6 models in select years
- Many 2-stroke and early 4-stroke gearcases
Always verify your engine's serial number for precise fitment, as variations exist across model years.
Easy Installation Tips for Smooth Shifts
Replacing the shift bus is a straightforward job that most boat owners can tackle in under an hour with basic tools. Here's a step-by-step overview:
- Drain the lower unit gear oil and remove the gearcase from the engine if needed.
- Disassemble the shift rod assembly, noting the orientation of existing components.
- Press out the old bushing and install the new Sierra 18-2154, using a proper bushing driver tool to avoid damage.
- Reassemble, refill with fresh gear lube, and test shifts in neutral, forward, and reverse.
Pro tip: Inspect the shift rod for straightness and the detent mechanism for wear while you're in there—addressing these prevents future issues.
Maximize Longevity with Proper Care
To keep your new shift bus performing flawlessly, integrate it into your seasonal maintenance routine. Regularly check shift cable adjustments, flush the lower unit after saltwater runs, and monitor for any grinding noises during gear changes. Pairing this part with high-quality gear oil can extend its life significantly, keeping your boating adventures uninterrupted.
Frequently Asked Questions
Equip your Mercury outboard with the Sierra 18-2154 and experience the difference in shift quality. It's more than a part—it's peace of mind for every trip on the water. Reliable, rugged, and ready for action.
Save $3 when you buy the Sierra 18-2154 for only $20 from NVN Marine! Same day shipping before 3pm.
Sierra 18-2154 Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Sierra Engine Parts |
| Weight: |
0.03 lb |
Sierra 18-2154 User Reviews
Sierra 18-2154 Shipping & Return
| Shipping Weight: |
0.03 lb |
|---|---|
| Box Sizes: |
1.00 (h) x 4.00 (w) x 5.00 (l) |
| Cubic Feet: |
20.0 |
| Returnable: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.