Gear Lube Fitting – Fits MerCruiser Alpha One Gen 2 & Bravo Sterndrives (Replaces 22-861150T02, 22-861150A2, 22-861150A1, 861150A1)
Gear Lube Fitting – Fits MerCruiser Alpha One Gen 2 & Bravo Sterndrives (Replaces 22-861150T02, 22-861150A2, 22-861150A1, 861150A1) 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
Gear Lube Fitting – Fits MerCruiser Alpha One Gen 2 & Bravo Ste...
Product Details
This Gear Lube Fitting 861150T02 is a 90-degree plastic fitting designed for Mercury MerCruiser Alpha One Gen 2 (1998 and newer) and Bravo (One, Two, & Three) sterndrive gear lube reservoirs. It connects the gear lube hose at the transom shield, ensuring a secure and reliable connection.
This part is a direct replacement for Mercury part numbers 22-861150T02, 22-861150A2, 22-861150A1, 861150A1, and Sierra 18-2109.
- Installs on the transom shield.
- Made from durable black plastic to resist the marine environment.
- Includes all necessary O-rings for a complete, leak-free installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury | 22-861150T02 | Current part number. Supersedes 22-861150A2 and 22-861150A1. |
| Mercury | 22-861150A2 | Superseded by 22-861150T02. |
| Mercury | 22-861150A1 | Superseded by 22-861150T02. |
| Mercury | 861150A1 | Interchangeable predecessor. |
| Sierra | 18-2109 | Aftermarket interchange. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fitting is compatible with the following MerCruiser sterndrive models.
| Brand | Model | Years | Notes |
|---|---|---|---|
| MerCruiser | Alpha One Gen 2 | 1998–newer | Original part 22-861150A1, 22-861150A2 |
| MerCruiser | Bravo 1 | All years | For gear lube reservoir |
| MerCruiser | Bravo 2 | All years | For gear lube reservoir |
| MerCruiser | Bravo 3 | All years | For gear lube reservoir |
Technical Specs
- Product Type
- Gear Lube Reservoir Fitting
- Installation
- Transom Shield
- Connection
- 90-degree
- Housing Material
- Plastic
- Housing Color
- Black
- Fitting Type
- Barbed
- Other Technical Attributes
- Used with 1/4" ID gear lube hose
What’s in the Box
- 1 x Gear Lube Fitting Assembly (22-861150T02)
- 1 x O-Ring (25-627021)
- 2 x O-Rings (25-20195 1)
Installation Notes
- Ensure the engine is off and the sterndrive is trimmed to a convenient position.
- Locate the old gear lube fitting on the transom shield.
- Carefully disconnect the gear lube hose from the old fitting. Be prepared for minor oil spillage.
- Remove the old fitting from the transom shield.
- Clean the mounting surface and inspect the lube hose for any signs of wear or cracking.
- Install the new O-rings from the kit onto the new fitting.
- Secure the new fitting assembly onto the transom shield until snug.
- Firmly re-attach the 1/4" ID gear lube hose to the barbed connection.
- After installation, check the gear lube reservoir fluid level and top it off if necessary.
- Run the engine and carefully inspect for any leaks around the new fitting.
Troubleshooting & FAQ
How do I know if this fitting is compatible with my sterndrive?
This fitting is specifically for MerCruiser Alpha One Gen 2 (1998 and newer) and all years of Bravo One, Two, and Three sterndrives. Please verify your model against our compatibility chart before ordering.
What are the signs of a failing gear lube fitting?
Common signs of failure include gear lube leaks around the transom area, a visible crack in the plastic fitting, or a persistent low level in the gear lube monitor bottle.
What size hose does this fitting connect to?
This fitting is designed for use with a 1/4" inside diameter (ID) gear lube hose.
Does this kit include everything needed for installation?
Yes, it includes the 90-degree fitting and all three required O-rings for a complete replacement. You will need your own tools to perform the installation.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout where available.
Warranty & returns?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window, provided the part is unused and in its 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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