Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II (Replaces MerCruiser 23-806036A1, Sierra 18-3760, GLM 87562, Mallory 9-72162)
Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II (Replaces MerCruiser 23-806036A1, Sierra 18-3760, GLM 87562, Mallory 9-72162) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II (Replace...
Product Details
This Shift Shaft Bushing Kit provides the necessary components to service the shift shaft on MerCruiser Alpha One Gen II sterndrive units manufactured from 1991 and later (serial numbers F094775 and up) that support engines up to 300 HP.
It serves as a direct replacement for MerCruiser 23-806036A1, Sierra 18-3760, GLM 87562, and Mallory 9-72162, ensuring broad interchange compatibility.
- Engineered for a secure press-in installation.
- Constructed from durable brass/bronze (bushings) and polyurethane (seals).
- Kit includes two shift shaft bushings and two seals for a complete repair.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 23-806036A1 |
| Sierra | 18-3760 |
| GLM | 87562 |
| Mallory | 9-72162 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser sterndrives, this kit is specifically for Alpha One Gen II models from 1991 onwards with serial numbers F094775 and higher.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | Alpha One Gen II | Up to 300HP | 4-Stroke | 1991–Present | 23-806036A1 | For sterndrives with S/N F094775 & Up |
Technical Specs
- Product Type
- Shift Shaft Bushing Kit
- Installation
- Press-in
- Housing Material
- Brass/Bronze (bushing), Polyurethane (seals)
- Housing Color
- Bronze
- Weight
- 0.05 kg (0.11 lbs)
- Fitting Type
- Press-fit
- Other Technical Attributes
- Kit includes two shift shaft bushings and two seals
What’s in the Box
- 2 x Shift Shaft Bushings (23-814308)
- 2 x Shift Shaft Seals (26-816464)
Installation Notes
- Consult your official service manual before beginning work. Disconnect the battery and drain the sterndrive gear lube.
- Remove the sterndrive assembly from the bell housing.
- Locate and disconnect the shift linkage mechanism to access the shift shaft.
- Carefully extract the old bushings and seals from the housing using an appropriate seal puller or driver. Avoid scoring the housing bore.
- Thoroughly clean the bore to remove any corrosion, sealant residue, or debris.
- Align and press the new bushings into the housing using a suitable press or bushing driver until they are fully seated.
- Lightly lubricate the new seals with marine grease and carefully install them.
- Reassemble the shift mechanism, reinstall the sterndrive, and fill with new gear lube to the specified level.
- Reconnect the battery and test shifting into forward, neutral, and reverse before operating the vessel.
Troubleshooting & FAQ
How do I know if this kit fits my sterndrive?
This kit is exclusively for MerCruiser Alpha One Gen II sterndrives made in 1991 or later. Crucially, your sterndrive's serial number must be F094775 or higher. Check the compatibility table and verify your serial number before ordering.
What are common signs of a failing shift shaft bushing or seal?
Symptoms include difficulty shifting gears, a stiff or binding shift lever, or visible water intrusion/gear lube leakage around the shift shaft area on the lower unit. This can lead to corrosion and eventual shifting failure.
Is a special tool required for installation?
Yes, a bushing driver or a press is highly recommended to install the new press-fit bushings without damaging them or the sterndrive housing. A seal puller is also helpful for removing the old seals.
How often should these parts be replaced?
There is no fixed replacement interval. They should be inspected during any major sterndrive service (e.g., bellows or gimbal bearing replacement) or replaced immediately if you notice signs of wear, leaks, or shifting problems.
What is the difference between this aftermarket kit and the original MerCruiser part?
This kit is manufactured to meet or exceed OEM specifications for fit, material, and function. The primary difference is that it is a cost-effective alternative to the original brand-name part, offering comparable performance and durability.
Why does the kit include two bushings and two seals?
The Alpha One Gen II sterndrive design utilizes two bushings and two seals for the shift shaft assembly to ensure stability and prevent water intrusion. This kit provides all the necessary components for a complete replacement.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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