Bell Housing Installation Gasket Kit – Fits MerCruiser R/MR/Alpha One Gen I & II (Replaces Mercury 27-94996Q2)
Bell Housing Installation Gasket Kit – Fits MerCruiser R/MR/Alpha One Gen I & II (Replaces Mercury 27-94996Q2) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Bell Housing Installation Gasket Kit – Fits MerCruiser R/MR/Alpha O...
Bell Housing Installation Gasket Kit – Fits MerCruiser R/MR/Alpha One Gen I & II (Replaces Mercury 27-94996Q2) is backordered and will ship as soon as it is back in stock.
Product Details
This Bell Housing Installation Gasket Kit is designed for MerCruiser R/MR, Alpha One, and Alpha One Gen II sterndrives manufactured from 1983 and newer, specifically fitting models with serial numbers 6225577 and above. It provides the necessary seals for installing the sterndrive to the bell housing, ensuring a watertight fit and preventing leaks.
This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 27-94996Q2/94996T2, Sierra 18-2619/18-2619-1, GLM 39622, Mallory 9-62601, and EMP 27-02386.
- Seals the sterndrive unit to the bell housing to prevent water intrusion.
- Includes all required gaskets and O-rings for a complete installation.
- Engineered for use in gasoline sterndrive applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 27-94996Q2 |
| Mercury | 94996T2 |
| Sierra | 18-2619 |
| Sierra | 18-2619-1 |
| GLM | 39622 |
| Mallory | 9-62601 |
| EMP | 27-02386 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury MerCruiser engines, please verify your model and serial number range to ensure correct fitment.
| Brand | Model | Years | OEM Part No. | Notes |
|---|---|---|---|---|
| MerCruiser | Alpha One Gen II | 1991–1995 | 27-94996Q2 | Serial numbers 0D469859 through 0F679999 |
| MerCruiser | Alpha One Gen II | 1996–1997 | 27-94996Q2 | Serial numbers 0F680000 through 0K999999 |
| MerCruiser | Alpha One Gen II | 1998–2013 | 27-94996Q2 | Serial numbers 0L100040 and up |
| MerCruiser | R/MR/Alpha One (Sterndrive) | 1983–1990 | 27-94996Q2 | Serial numbers 6225577 through 0D469858 |
| MerCruiser | R/MR/Alpha One (Transom Assembly) | 1983–1990 | 27-94996Q2 | Serial numbers 6216687 through 0D469858 |
Technical Specs
- Product Type
- Drive Installation Gasket Kit
- Installation
- Seals sterndrive to bell housing
- Fuel Type
- Gasoline
- Housing Material
- Rubber/Composite
- Weight
- 0.22 lb (0.10 kg)
- Other Technical Attributes
- Contains gaskets and O-rings for proper installation of the bell housing
What’s in the Box
- 1 x Outdrive Mounting Gasket (27-8M0091545)
- 1 x Bell Housing Gasket (27-35982)
- 1 x O-Ring (25-33504) - 1.359" x 0.139"
- 1 x O-Ring (25-35027) - 1.046" x 0.139"
- 2 x O-Ring (25-29845) - 0.924" x 0.103"
Installation Notes
- Disconnect the battery and follow all marine safety precautions before starting.
- Remove the sterndrive unit from the transom assembly according to the official service manual.
- Carefully detach the old bell housing and remove any old gasket material from both mating surfaces.
- Clean the mounting surfaces thoroughly to ensure they are free of oil, old adhesive, and debris.
- Position the new gaskets and O-rings from the kit correctly onto the bell housing.
- Reinstall the bell housing and sterndrive, tightening all fasteners to the manufacturer’s specified torque values.
- Once assembled, perform a leak check on the water before full operation.
Troubleshooting & FAQ
How do I know if I need this gasket kit?
Common signs of a failed bell housing gasket include water in the gimbal bearing, contaminated gear lube, or visible water leaks between the sterndrive and the transom assembly.
Will this fit my Alpha One Gen I drive?
This kit fits MerCruiser R/MR/Alpha One models from 1983–1990 (serial numbers 6225577 through 0D469858). It's critical to verify your drive's serial number against the compatibility table before ordering.
Is it necessary to use all the parts in this kit?
Yes. For a reliable and long-lasting seal, it is strongly recommended to replace all included gaskets and O-rings any time the sterndrive is separated from the bell housing.
When should this gasket set be replaced?
While there is no fixed replacement schedule, this gasket set should be replaced whenever the sterndrive is removed for service or if any signs of leakage are 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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