Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II (Replaces 23-806036A1)
Shift Shaft Bushing Kit – Fits MerCruiser Alpha One Gen II (Replaces 23-806036A1) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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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 is a direct-fit replacement for MerCruiser Alpha One Gen II sterndrive units manufactured from 1991 to present (serial numbers F094775 and up). The kit provides the necessary bushings and seals to service the shift shaft located in the bell housing, restoring smooth and reliable shifting.
It serves as a direct interchange for several part numbers, including Mercury/MerCruiser 23-806036A1, Sierra 18-3760, GLM 87562, and Mallory 9-72162.
- Includes two durable brass bushings and two polyurethane seals.
- Engineered for a precise press-in installation.
- Restores shift mechanism integrity and prevents water intrusion.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/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 applications, this kit is specifically for Alpha One Gen II sterndrives with a serial number of F094775 or 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
- Kit Contents
- Kit includes two shift shaft bushings and two seals
- Warranty
- 1 Year (varies by retailer)
What’s in the Box
- 2 x Shift Shaft Bushings
- 2 x Shift Shaft Seals
Installation Notes
- Disconnect the vessel's battery and follow all safety precautions before beginning work on the sterndrive.
- Access the bell housing area where the shift shaft mechanism is located. This may require partial disassembly of the drive unit.
- Carefully remove the old, worn shift shaft seals and bushings. Use an appropriate tool to avoid scoring the housing.
- Thoroughly clean the bushing bores in the housing to remove any corrosion, debris, or old sealant.
- Using a suitable press or driver, carefully press the new bushings into place until they are fully seated. Ensure they are installed straight.
- Install the new seals, applying a light coat of marine-grade grease to the sealing lips to aid installation and protect the shaft.
- Reassemble the shift mechanism and all other components in the reverse order of removal.
- Test the shifting action to ensure it is smooth and engages correctly before returning the vessel to service.
Troubleshooting & FAQ
Will this kit fit my MerCruiser Alpha One Gen I drive?
No, this kit is specifically designed for Alpha One Gen II models from 1991 onwards (S/N F094775 and up). It is not compatible with Gen I drives.
What are the signs that my shift shaft bushings need replacement?
Common symptoms include difficulty shifting into or out of gear, a stiff or binding feeling in the shift lever, or visible water intrusion around the shift shaft area in the bell housing.
How often should these bushings be replaced?
There is no fixed service interval. Bushings should be inspected during any major sterndrive service or if shifting problems occur. They are wear items that degrade over time, especially in saltwater environments.
Is any special tool required for installation?
Yes, a bushing driver or press is highly recommended for proper installation. Attempting to hammer the bushings in can damage them or the housing.
Is this an OEM part?
This is an aftermarket replacement part, not an original Mercury/MerCruiser component. It is engineered to meet or exceed OEM specifications for fit, form, and function using comparable materials.
How fast is shipping?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, with expedited options available at checkout where applicable.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not order.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is strongly recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with typical transit times of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
Payment & Security
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