Bell Housing Installation Gasket Kit – Fits MerCruiser Alpha One Gen I & II, R, MR Drives (Replaces 94996Q2, 27-94996Q2)
Bell Housing Installation Gasket Kit – Fits MerCruiser Alpha One Gen I & II, R, MR Drives (Replaces 94996Q2, 27-94996Q2) 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).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Bell Housing Installation Gasket Kit – Fits MerCruiser Alpha One Ge...
Product Details
This Bell Housing Installation Gasket Kit provides a complete set of gaskets, O-rings, and seals for installing the bell housing on MerCruiser R, MR, Alpha One, and Alpha One Gen II sterndrive units from 1983 onwards. It is designed to create a durable, watertight seal between the sterndrive and the transom assembly, preventing leaks and ensuring reliable performance.
This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury/MerCruiser 94996Q2, 27-94996Q2, and 27-94996T2; Sierra 18-2619 and 18-2619-1; GLM 39622; and Mallory 9-62601.
- Creates a complete, watertight seal for sterndrive-to-transom installation.
- Includes all necessary gaskets, O-rings, and seals for a full replacement.
- All components are manufactured to meet or exceed OEM specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury / MerCruiser | 94996Q2 |
| Mercury / MerCruiser | 27-94996Q2 |
| Mercury / MerCruiser | 27-94996T2 |
| Sierra | 18-2619 |
| Sierra | 18-2619-1 |
| GLM | 39622 |
| Mallory | 9-62601 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is designed for a wide range of MerCruiser sterndrives. Please verify your model and serial number to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | Alpha One | Various | 4-Stroke | 1983–1990 | 27-94996Q2 | For serial numbers 6225577 through 0D469858 |
| MerCruiser | Alpha One Gen II | Various | 4-Stroke | 1991–1995 | 27-94996Q2 | For serial numbers 0D469859 through 0F679999 |
| MerCruiser | Alpha One Gen II | Various | 4-Stroke | 1996–1997 | 27-94996Q2 | For serial numbers 0F680000 through 0K999999 |
| MerCruiser | Alpha One Gen II | Various | 4-Stroke | 1998–2013 | 27-94996Q2 | For serial numbers 0L100040 and up |
| MerCruiser | R/MR Sterndrive | Various | 4-Stroke | 1983–1990 | 27-94996Q2 | For serial numbers 6225577 through 0D469858 |
| MerCruiser | R/MR Transom Assembly | Various | 4-Stroke | 1983–1990 | 27-94996Q2 | For serial numbers 6216687 through 0D469858 |
Technical Specs
- Product Type
- Bell Housing Installation Gasket Kit
- Installation
- Sterndrive to Transom Assembly
- Contents
- Gaskets, Seals, and O-Rings
- Dimensions
- Kit dimensions vary by component
- Other Technical Attributes
- All components manufactured to OEM specifications for proper sealing
- Warranty
- 1 year against manufacturer defects
What’s in the Box
- 1 x Outdrive Mounting Gasket (Replaces 18-2743, 27-94996-2)
- 1 x Bell Housing Gasket (Replaces 18-2840, 27-35982)
- 1 x O-Ring (Replaces 18-7153, 25-25439)
- 1 x O-Ring (Replaces 18-7170, 25-33504)
- 2 x O-Rings (Replaces 18-7117, 25-35027)
Installation Notes
- Disconnect the boat's battery before beginning work.
- Position the sterndrive in the trailering position and properly support its weight.
- Remove the sterndrive unit from the bell housing according to the manufacturer's service manual.
- Remove the old bell housing gaskets, seals, and O-rings. Thoroughly clean all mating surfaces to remove any old gasket material or corrosion.
- Carefully install the new components from the kit, ensuring each gasket and O-ring is seated correctly in its designated channel.
- Apply a light coat of 2-4-C marine lubricant to the O-rings to aid installation and sealing.
- Re-install the sterndrive unit, torquing all fasteners to the manufacturer’s specified values.
- After reassembly, check for any water leaks around the transom assembly area.
Troubleshooting & FAQ
How do I know if this kit fits my MerCruiser drive?
The best way is to check your sterndrive's serial number. This kit fits specific serial number ranges for R, MR, Alpha One, and Alpha One Gen II models. Please refer to the compatibility table above for detailed serial number ranges.
What are the signs of a failed bell housing gasket?
Common symptoms include water inside the boat's bilge originating from the transom cutout area, water in the gear lube (milky appearance), or visible corrosion around the mating surfaces between the sterndrive and transom assembly.
How often should these gaskets be replaced?
These gaskets and seals should be replaced any time the sterndrive unit is removed from the transom for service. It is good preventative maintenance to inspect them annually for signs of wear, cracking, or leaks.
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.
Payment & Security
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