Bell Housing Installation Gasket Kit – Fits MerCruiser R, MR, & Alpha One Gen II (Replaces 27-94996Q2)
Bell Housing Installation Gasket Kit – Fits MerCruiser R, MR, & Alpha One Gen II (Replaces 27-94996Q2) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Bell Housing Installation Gasket Kit – Fits MerCruiser R, MR, &...
Product Details
This Bell Housing Installation Gasket Kit provides all necessary components for installing the bell housing on MerCruiser R, MR, Alpha One Gen I, and Alpha One Gen II sterndrive units. It is designed for boats manufactured from 1983 and newer with serial numbers 6225577 and above.
It serves as a direct replacement for Mercury/MerCruiser 27-94996Q2 and 27-94996T2, Sierra 18-2619 and 18-2619-1, GLM 39620 and 39622, Mallory 9-62601 and 9-62601-25, and EMP 27-02386.
- Installs between the sterndrive bell housing and the transom.
- Engineered for a direct fit to ensure a proper seal.
- Kit includes a port for the gear lube monitor.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 27-94996Q2 |
| Mercury/MerCruiser | 27-94996T2 |
| Sierra | 18-2619 |
| Sierra | 18-2619-1 |
| GLM | 39620 |
| GLM | 39622 |
| Mallory | 9-62601 |
| Mallory | 9-62601-25 |
| EMP | 27-02386 |
Engine & Model Compatibility
Confirm your engine model and year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | R Drive | Various | 4-Stroke | 1983 and newer | 27-94996Q2 | Serial numbers 6225577 and above |
| MerCruiser | MR Drive | Various | 4-Stroke | 1983 and newer | 27-94996Q2 | Serial numbers 6225577 and above |
| MerCruiser | Alpha One Gen I | Various | 4-Stroke | 1983 and newer | 27-94996Q2 | Serial numbers 6225577 and above |
| MerCruiser | Alpha One Gen II | Various | 4-Stroke | 1983 and newer | 27-94996Q2 | Serial numbers 6225577 and above |
Technical Specs
- Product Type
- Bell Housing/Outdrive Installation Gasket Kit
- Installation
- Stern Drive Bell Housing to Transom
- Housing Material
- Rubber/Composite
- Housing Color
- Black
- Fitting Type
- Direct Fit
- Warranty
- Varies by manufacturer (typically 1 year)
- Other Technical Attributes
- Kit includes port for gear lube monitor
What’s in the Box
- 1 x Outdrive Mounting Gasket (27-35982 GASKET-RUBBER)
- 1 x Bell Housing Gasket (27-8M0091545 GASKET)
- 1 x O-Ring (25-33504 O-RING 1.359 X .139)
- 1 x O-Ring (25-35027 O-RING 1.046 X .139)
- 2 x O-Ring (25-29845 O-RING .924 X .103)
Installation Notes
- Ensure the engine is off and the battery is disconnected. Trim the sterndrive to the full up position and engage the trailer lock.
- Disconnect all hoses, lines, and cables connected to the sterndrive unit, including the speedometer tube, shift cable, and trim limit/sender wires.
- Remove the nuts and washers securing the sterndrive to the bell housing. Carefully pull the drive unit away from the bell housing.
- Remove the old bell housing gasket, O-rings, and mounting gasket from the transom assembly.
- Thoroughly clean all mating surfaces, ensuring they are free of old gasket material, corrosion, and debris.
- Install the new O-rings and gaskets from the kit onto the transom assembly and bell housing as per the manufacturer's manual.
- Carefully reinstall the sterndrive unit, ensuring proper alignment of the U-joint shaft, shift shaft, and water intake.
- Secure the sterndrive unit with the mounting hardware, tightening the nuts to the torque specified in your service manual.
- Reconnect all hoses, lines, and cables. Check for leaks and proper operation before returning to the water.
Troubleshooting & FAQ
Will this kit fit my 1982 MerCruiser drive?
No, this kit is specifically for models from 1983 and newer with serial numbers 6225577 and above. Using it on an older model may result in improper sealing and leaks.
What are the signs that my bell housing gasket needs replacement?
Common signs of a faulty gasket include water leaking into the bilge from the transom assembly area, an oily sheen in the water around the outdrive (indicating a gear lube leak), or visible corrosion around the bell housing mating surface.
Is the large rubber gasket for the transom or the bell housing?
This kit includes two main gaskets: a large rubber gasket (27-35982) for mounting the outdrive to the transom assembly and another gasket (27-8M0091545) for the bell housing itself, along with several O-rings for sealing fluid and exhaust passages.
Can I reuse my old gaskets if they look OK?
It is strongly recommended to never reuse outdrive gaskets. These are single-use seals that compress and conform to the mating surfaces. Reusing them significantly increases the risk of water intrusion and gear lube leaks, which can lead to catastrophic drive failure.
What is the difference between OEM and aftermarket parts?
This listing is for an aftermarket replacement, not an OEM part. Our parts are built to the same or higher specifications as original equipment and are manufactured in an ISO 9001 certified facility. They are batch-inspected to ensure quality and provide a reliable, cost-effective alternative.
What are your shipping speeds and costs?
We offer fast global shipping, with typical transit times of 5–15 days for standard delivery. Standard shipping is free to most regions. Expedited shipping options, if available for your location, will be presented at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter an issue, please contact our support team with your order number. Returns are accepted within our standard return window for items that are unused and in their original packaging.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is strongly recommended for safety and to ensure proper performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with parts arriving in 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
Payment & Security
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