Lower Gimbal Housing Bushing – Fits Mercury/Mercruiser Alpha One & Bravo Drives (Replaces 23-983571)
Lower Gimbal Housing Bushing – Fits Mercury/Mercruiser Alpha One & Bravo Drives (Replaces 23-983571) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Lower Gimbal Housing Bushing – Fits Mercury/Mercruiser Alpha One &a...
Product Details
This is an aftermarket Lower Gimbal Housing Bushing designed for Mercury/Mercruiser Alpha One Gen I, Alpha One Gen II, and Bravo series sterndrive units. It ensures a precise fit for the lower gimbal housing, restoring proper steering and pivot function.
This part offers a direct interchange for Mercury/Mercruiser 23-983571, Quicksilver 983571, and GLM 21360, providing a reliable equivalent to the original component.
- Installs via press-fit method.
- Specifically designed for lower gimbal housing applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mercruiser | 23-983571 |
| Quicksilver | 983571 |
| GLM | 21360 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury/Mercruiser owners, this bushing fits the popular Alpha One and Bravo drive series. Verify your OEM part number (23-983571) to ensure compatibility.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Mercury/Mercruiser | Alpha One Gen I | 23-983571 | Lower gimbal housing bushing |
| Mercury/Mercruiser | Alpha One Gen II | 23-983571 | Lower gimbal housing bushing |
| Mercury/Mercruiser | Bravo | 23-983571 | Lower gimbal housing bushing |
Technical Specs
- Product Type
- Lower Gimbal Housing Bushing
- Installation
- Press-fit
- Dimensions
- 1.38 × 1.38 × 0.50 inches (35.05 × 35.05 × 12.70 mm)
- Weight
- 0.03 lb (0.014 kg)
- Fitting Type
- Press-fit bushing
- Other Technical Attributes
- Lower gimbal housing application
What’s in the Box
- 1 x Lower Gimbal Housing Bushing (23-983571)
Installation Notes
- Disconnect the vessel's battery and ensure the sterndrive is in the fully down (trimmed-in) position for safety.
- Remove the sterndrive assembly according to the manufacturer's service manual to gain access to the gimbal housing.
- Carefully extract the old, worn bushing using a dedicated bushing puller or driver tool. Avoid damaging the housing bore.
- Thoroughly clean the bushing bore within the gimbal housing. Ensure it is free from corrosion, burrs, and any leftover material.
- Align the new bushing squarely with the bore. Using a suitable press or bushing driver, press the new component in until it is fully and evenly seated.
- Reinstall the sterndrive, bellows, and all other components. Torque all fasteners to the specified values and test for proper steering and trim operation before returning to the water.
Troubleshooting & FAQ
How do I know if the gimbal housing bushing needs replacement?
Signs of a worn bushing include excessive play or looseness in the sterndrive, stiff or binding steering, or rattling noises from the transom area during operation. A visual inspection may also reveal visible wear or degradation of the bushing material.
Is any special tool required for installation?
Yes, since this is a press-fit bushing, a proper bushing driver set or a hydraulic press is required for both removal of the old part and installation of the new one. Using improper tools can damage the bushing or the gimbal housing.
Will this fit both upper and lower gimbal pivot points?
No, this bushing is specifically for the lower gimbal housing application. The upper and lower bushings are typically different parts. Please verify the exact part number needed for your specific repair.
What are the signs of incorrect installation?
If the bushing is not installed squarely, it can cause premature wear, binding in the steering, or place undue stress on the gimbal ring and shaft. Ensure it is fully seated and flush as per the service manual's instructions.
How often should this bushing be replaced?
There is no fixed replacement interval; it should be inspected for wear during regular sterndrive maintenance (e.g., when servicing bellows) and replaced when play or wear is detected.
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.
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