Shift Shaft Bushing Kit for MerCruiser Alpha One Gen II – Replaces OEM 23-806036A1, Sierra 18-3760, GLM 87562 and Mallory 9-72162
Shift Shaft Bushing Kit for MerCruiser Alpha One Gen II – Replaces OEM 23-806036A1, Sierra 18-3760, GLM 87562 and Mallory 9-72162 is backordered and will ship as soon as it is back in stock.
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Shift Shaft Bushing Kit for MerCruiser Alpha One Gen II – Replaces ...
Shift Shaft Bushing Kit for MerCruiser Alpha One Gen II – Replaces OEM 23-806036A1, Sierra 18-3760, GLM 87562 and Mallory 9-72162 is backordered and will ship as soon as it is back in stock.
Product Details
This Shift Shaft Bushing Kit is designed for MerCruiser Alpha One Gen II sterndrive units with serial numbers F094775 and higher. Catalog references identify this application as the later Alpha One Gen II configuration, commonly associated with 1991 and newer units.
It is listed as a replacement for MerCruiser OEM part number 23-806036A1 and is cross-referenced with Sierra 18-3760, GLM 87562 and Mallory 9-72162. Always compare the sterndrive serial number and the original components before ordering.
- Service kit for the shift shaft bushing and seal assembly.
- Designed for press-fit installation in the sterndrive housing.
- Includes two shift shaft bushings and two shift shaft seals.
- Aftermarket replacement part; not manufactured by MerCruiser.
Part Number Matrix
Use these references to compare the replacement with the part being removed.
| Brand or Reference | Part Number | Reference Type |
|---|---|---|
| MerCruiser | 23-806036A1 | OEM reference |
| Sierra | 18-3760 | Aftermarket cross-reference |
| GLM | 87562 | Aftermarket cross-reference |
| Mallory | 9-72162 | Aftermarket cross-reference |
Engine & Model Compatibility
This kit is intended for the later-generation shift shaft arrangement used on MerCruiser Alpha One Gen II sterndrives. Confirm the serial-number break before installation.
| Brand | Model | Serial Condition | Approximate Model Years | OEM Reference | Application Notes |
|---|---|---|---|---|---|
| MerCruiser | Alpha One Gen II | F094775 and higher | 1991 and later | 23-806036A1 | Later Alpha One Gen II shift shaft bushing configuration |
Important: Alpha One and Alpha One Gen II assemblies use different parts in some serial-number ranges. The earlier configuration, including Alpha One Gen II units below the applicable serial break, may require a different bushing kit. Do not use this listing for units with serial numbers below F094775 without confirming the correct parts diagram.
Technical Specifications
- Product Type
- Shift shaft bushing and seal kit
- Installation
- Press-fit installation
- Application
- MerCruiser Alpha One Gen II sterndrive
- Serial Range
- F094775 and higher
- Included Components
- Two shift shaft bushings and two shift shaft seals
- Reference OEM Number
- 23-806036A1
- Aftermarket References
- Sierra 18-3760, GLM 87562 and Mallory 9-72162
What's in the Box
- 2 x Shift Shaft Bushings
- 2 x Shift Shaft Seals
Installation Notes
- Consult the official sterndrive service manual and verify the serial number before beginning work.
- Disconnect the battery and drain the sterndrive gear lubricant according to the service manual.
- Remove the sterndrive assembly from the bell housing as required for access to the shift shaft housing.
- Disconnect the shift linkage and remove the shift shaft components needed to access the bushings and seals.
- Carefully remove the old bushings and seals with an appropriate seal puller or bushing driver. Avoid scoring the housing bore.
- Clean the bore thoroughly and remove corrosion, sealant residue and debris.
- Align the replacement bushings and press them into position with a suitable bushing driver or press until fully seated.
- Lightly lubricate the replacement seals with suitable marine grease and install them in the correct orientation.
- Reassemble the shift shaft and linkage, reinstall the sterndrive, and refill the gear lubricant to the specified level.
- Test shifting through forward, neutral and reverse before operating the vessel.
Troubleshooting & FAQ
How do I know if this kit fits my sterndrive?
Verify that your unit is a MerCruiser Alpha One Gen II with serial number F094775 or higher. Also compare the removed parts, the service-manual parts diagram and the OEM reference 23-806036A1 before ordering.
What are common symptoms of worn shift shaft bushings or seals?
Possible symptoms include a stiff or binding shift mechanism, difficulty selecting gears, looseness at the shift shaft, or water intrusion and gear lubricant leakage around the shift shaft area.
Is a special tool required?
A suitable bushing driver or press is strongly recommended for installing the press-fit bushings without damaging the parts or housing. A seal puller can help remove the old seals.
How often should these parts be replaced?
There is no universal replacement interval. Inspect the bushings and seals during major sterndrive service and replace them when wear, looseness, leakage or shifting problems are found.
Is this an OEM MerCruiser part?
No. This is an aftermarket replacement kit intended to replace the OEM-referenced assembly. MerCruiser, Sierra, GLM and Mallory are manufacturer or brand references and are not claims that this kit is produced by those companies.
Why does the kit include two bushings and two seals?
The listed package contains two shift shaft bushings and two shift shaft seals for servicing the corresponding shift shaft assembly. Confirm the parts and quantities in the package before beginning installation.
What is the difference between the later and earlier Alpha One Gen II applications?
The shift shaft bushing kit changes at the applicable serial-number break. This listing is for the F094775-and-higher configuration. Earlier units may use a different OEM reference and should not be matched by model name alone.
Safety & Important Information
- Verify the sterndrive model, serial number and original part before ordering.
- Do not rely on horsepower or engine model alone to determine sterndrive fitment.
- This is an aftermarket replacement, not an OEM MerCruiser component.
- Follow the official service manual for removal, installation, lubrication and gear-lubricant procedures.
- Professional installation is recommended when sterndrive disassembly or shift adjustment is required.
About Sea Sierra
- Marine Replacement Parts — We supply aftermarket components for common marine service and repair applications.
- Fitment-Focused Listings — Product references and serial-number conditions are provided to help match the replacement to the original assembly.
- Practical Service Support — Always compare the part, application and service-manual information before installation.
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