Gear Lube Reservoir Fitting – Fits MerCruiser Alpha One Gen II & Bravo (Replaces 861150T02, 22-861150A1, 22-861150A2)
Gear Lube Reservoir Fitting – Fits MerCruiser Alpha One Gen II & Bravo (Replaces 861150T02, 22-861150A1, 22-861150A2) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Gear Lube Reservoir Fitting – Fits MerCruiser Alpha One Gen II &...
Gear Lube Reservoir Fitting – Fits MerCruiser Alpha One Gen II & Bravo (Replaces 861150T02, 22-861150A1, 22-861150A2) is backordered and will ship as soon as it is back in stock.
Product Details
This Gear Lube Reservoir Fitting is designed for Mercury MerCruiser Alpha One Gen II (1998 and newer) and all Bravo series sterndrives. It serves as a crucial 90-degree connection point on the transom shield bulkhead, ensuring a reliable flow from the gear lube reservoir.
It is a direct replacement that supersedes Mercury-MerCruiser part numbers 861150T02, 22-861150A1, and 22-861150A2.
- Installs on the transom shield of Alpha and Bravo stern drives.
- Features a 90-degree plastic barbed connector for secure hose attachment.
- Requires an E-clip for secure installation (not always included).
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Mercury-MerCruiser | 22-861150A1 | 861150T02 |
| Mercury-MerCruiser | 22-861150A2 | 861150T02 |
| Mercury-MerCruiser | 861150A1 | 861150T02 |
| Mercury-MerCruiser | 861150A2 | 861150T02 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Years | OEM Part No. | Notes |
|---|---|---|---|---|
| MerCruiser | Alpha One Gen II | 1998 & newer | 861150T02 | Supersedes 861150A1, 861150A2 |
| MerCruiser | Bravo One | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo Two | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo Three | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo X One | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo X Two | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo X Three | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo XR One | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo XR Three | All | 861150T02 | Transom fitting |
| MerCruiser | Bravo XR Sportmaster | All | 861150T02 | Transom fitting |
Technical Specs
- Product Type
- Gear Lube Reservoir Fitting
- Installation
- Transom Shield Bulkhead
- Connection
- 90-degree plastic fitting
- Housing Material
- Plastic
- Housing Color
- Black
- Fitting Type
- Barbed connector
- Other Technical Attributes
- Requires E-clip for secure installation
- Warranty
- 1 Year
What’s in the Box
- 1 x Gear Lube Reservoir Fitting Assembly (861150T02)
Installation Notes
- Ensure the engine is off and the drive is in a safe, accessible position.
- Locate the existing gear lube reservoir fitting on the inner transom shield.
- Place a container underneath to catch any residual gear lube.
- Carefully disconnect the lube hose from the barbed fitting.
- Remove the E-clip securing the old fitting, then pull the fitting out from the transom.
- Clean the installation area to ensure a good seal.
- Insert the new fitting into the transom shield and secure it with the E-clip.
- Reconnect the gear lube hose to the new barbed fitting, ensuring it is fully seated.
- Top off the gear lube reservoir as needed and check the connection for any leaks.
Troubleshooting & FAQ
Which sterndrives is this fitting compatible with?
This fitting is designed for MerCruiser Alpha One Gen II drives manufactured in 1998 and later, as well as all models of MerCruiser Bravo series drives (Bravo One, Two, Three, and X-series).
What is the difference between part number 861150T02 and 861150A2?
The part number 861150T02 is the latest version that supersedes older numbers like 861150A1 and 861150A2. The parts are functionally identical, but the 'T' version is the current production replacement.
How do I know if this fitting is failing or needs replacement?
Signs of a failing fitting include visible cracks in the plastic, gear lube leaking from the fitting or hose connection, or difficulty maintaining fluid levels in the reservoir. A brittle or discolored appearance also suggests it's time for replacement.
Is an E-clip required for installation?
Yes, an E-clip is required to securely lock the fitting into the transom shield. While this part is the fitting assembly, ensure you have a compatible E-clip before starting the installation.
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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