Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II Sterndrive (Replaces 23-806036A1)

Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II Sterndrive (Replaces 23-806036A1)

This shift shaft bushing kit is designed for MerCruiser Alpha One Gen II sterndrive units manufactured from 1991 and later. It is essential that your sterndrive's serial number is F094775 and up for this kit to be compatible. The kit provides the necessary bushings and seals to service the shift shaft mechanism located in the bell housing.

This component is a direct replacement for Mercury/MerCruiser part number 23-806036A1, Sierra 18-3760, GLM 87562, and Mallory 9-72162.

• Complete Kit: Includes two shift shaft bushings and two seals for a full replacement.
• Durable Materials: Features brass/bronze bushings and polyurethane seals for longevity and reliable performance.
• Installation Method: Requires a press-in fit for secure installation into the bell housing.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 2 x Shift Shaft Bushings
• 2 x Shift Shaft Seals

Installation Guide

1. Safety First: Disconnect the boat's battery before beginning any work.
2. Drain Gear Lube: Drain the gear lube from the sterndrive unit completely.
3. Separate Drive: Separate the sterndrive from the bell housing assembly according to your service manual.
4. Locate Bushings: Identify the old shift shaft bushings and seals within the bell housing.
5. Remove Old Parts: Carefully extract the old seals. Use a suitable press or driver to remove the old bushings, taking care not to damage the housing bore.
6. Clean Housing: Thoroughly clean the bushing bores to remove any corrosion or debris.
7. Install New Bushings: Use a press to evenly install the new bushings until they are fully and correctly seated.
8. Install New Seals: Place the new seals into position over the bushings.
9. Lubricate: Apply a light coat of marine grease to the new seals, bushings, and the shift shaft.
10. Reassemble: Reattach the sterndrive to the bell housing, ensuring all connections are secure.
11. Final Steps: Refill the sterndrive with fresh gear lube. Reconnect the battery and test the shifting operation on the water.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my sterndrive?
A: This kit is specifically for MerCruiser Alpha One Gen II sterndrives made from 1991 onwards. The most important check is the serial number; your drive's serial number must be F094775 or higher. If your serial number is lower or you have a different model, this kit will not fit.

Q: What are the signs that my shift shaft bushings are failing?
A: Common symptoms include difficulty shifting gears, excessive play or a "wobbly" feeling in the shift mechanism, or a persistent water leak from the area where the shift shaft enters the bell housing.

Q: Is a special tool required for installation?
A: Yes, proper installation requires a bushing driver or a press to remove the old bushings and install the new ones without damaging them or the bell housing. This is typically not a task that can be done with basic hand tools.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.