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

This gasket kit provides a complete set of the gaskets, O-rings, and seals required for the proper installation of the bell housing on MerCruiser R, MR, Alpha One, and Alpha One Gen II sterndrive units. It is designed to create a watertight seal between the sterndrive and the transom assembly, preventing water intrusion into the bilge.

This kit is a direct replacement for Mercury/MerCruiser part numbers 94996Q2, 27-94996Q2, and 27-94996T2, and also replaces common aftermarket parts from Sierra (18-2619, 18-2619-1), GLM (39622), and Mallory (9-62601).

• Includes all necessary gaskets, seals, and O-rings for a complete bell housing installation.
• Engineered to meet OEM specifications for a precise fit and reliable, long-lasting seal.
• Compatible with a wide range of MerCruiser sterndrives from 1983 to 2013 and newer.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 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 Guide

1. Safety First: Ensure the engine is off and disconnect the battery. Trim the sterndrive to a comfortable working position.
2. Remove Sterndrive: Carefully unbolt and detach the sterndrive unit from the transom assembly. Be prepared for the weight of the drive.
3. Access Bell Housing: Once the drive is removed, the bell housing will be accessible. Note the position of all components before removal.
4. Remove Old Gaskets: Take off the old bell housing and discard all old gaskets, seals, and O-rings.
5. Clean Surfaces: Thoroughly clean all mating surfaces on the transom assembly and bell housing. Ensure they are free of old gasket material, corrosion, and debris for a proper seal.
6. Install New Kit: Carefully place the new gaskets, O-rings, and seals from the kit into their correct positions.
7. Reinstall Housing & Drive: Reinstall the bell housing followed by the sterndrive unit. Ensure everything is aligned correctly.
8. Torque Bolts: Tighten all mounting bolts to the manufacturer's specified torque sequence and values to ensure an even seal.
9. Final Checks: Reconnect the battery. After launching the vessel, check carefully for any signs of water leaks around the transom assembly.

Troubleshooting & FAQ

How do I confirm this fits my engine?
This kit fits MerCruiser R, MR, Alpha One (1983-1990), and Alpha One Gen II (1991 and newer) drives. The best way to confirm fitment is to check your drive's serial number against the ranges listed in the compatibility table above. The kit is a direct replacement for OEM part number 94996Q2.

What are the signs my old bell housing gasket has failed?
A common symptom of a failed bell housing gasket is water entering the boat's bilge area from the transom assembly. You might notice excess water without another obvious source, particularly when the boat is in the water. Visual inspection may also reveal corrosion or water trails around the bell housing connection point.

How often should a bell housing gasket be replaced?
There is no fixed replacement interval, but the gaskets should be replaced every time the sterndrive is removed from the transom for service. This ensures a fresh, watertight seal upon reassembly and prevents future leaks.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance. Improper installation can lead to leaks and damage.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.