Gimbal Exhaust Seal Pipe – Fits Mercury MerCruiser Alpha & Bravo (Replaces 41802)

Gimbal Exhaust Seal Pipe – Fits Mercury MerCruiser Alpha & Bravo (Replaces 41802)

This exhaust seal pipe is designed for Mercury MerCruiser Alpha One (Gen 1 & 2) and Bravo sterndrives from 1983 and newer. It ensures a secure, leak-free connection between the exhaust Y-pipe and the gimbal housing, which is critical for preventing water intrusion and exhaust leaks.

This component is a direct replacement for Mercury Marine part number 41802, GLM 86217, and SEI Marine 9F-116-07.

• Installation Point: Seals the exhaust Y-pipe to the gimbal housing.
• Material: Manufactured from high-grade rubber to withstand the marine environment.
• Package Includes: 1 x Gimbal Exhaust Seal.

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.

Compatible Sterndrive & Transom Assembly Models:

Compatible Engine Setups:

Technical Specifications

Package Contents

• 1 x Gimbal Exhaust Seal (Replaces OEM 41802)

Installation Guide

1. Safety First: Ensure the boat is securely positioned on a trailer or lift and disconnect the battery.
2. Remove Sterndrive: Detach the sterndrive unit from the transom assembly to gain access to the gimbal housing area.
3. Access Old Seal: Locate the exhaust bellows and the connection point between the exhaust Y-pipe and the gimbal housing.
4. Remove Old Seal: Carefully extract the old, worn gimbal exhaust seal. Take note of its orientation.
5. Clean Surfaces: Thoroughly clean the mounting surfaces on both the Y-pipe and the gimbal housing to remove any old sealant, corrosion, or debris.
6. Install New Seal: Lightly lubricate the new seal with a suitable marine adhesive or grease and carefully press it into place, ensuring it is fully and evenly seated.
7. Reassemble: Reinstall the sterndrive, bellows, and any other components removed, tightening all hardware to the manufacturer's specified torque.
8. Final Check: Reconnect the battery. Once the boat is in the water, start the engine and check for any signs of exhaust or water leaks around the gimbal area.

Troubleshooting & FAQ

Q: How can I be sure this seal fits my specific MerCruiser model?

A: The best way is to verify your drive and engine model against the detailed compatibility tables provided on this page. This seal fits a wide range of Alpha One (Gen 1 & 2) and Bravo drives. Cross-referencing the OEM part number (41802) is also a reliable method.

Q: What are the common signs of a failing gimbal exhaust seal?

A: The most common symptoms include water entering the exhaust bellows, visible exhaust fumes around the transom assembly when the engine is running, or an unusual exhaust noise from the stern of the boat.

Q: How often should this seal be replaced?

A: There is no fixed replacement interval, but it is highly recommended to replace this seal whenever the sterndrive is removed for other service, such as gimbal bearing or bellows replacement. You should also replace it immediately if you notice any signs of wear, cracking, or leakage.

Q: Is this part difficult to install?

A: Installation requires removing the sterndrive, which can be a complex and labor-intensive job. While it can be done by an experienced DIYer with the right tools, we recommend professional installation to ensure it is done correctly and prevents future leaks.

Q: OEM vs. Aftermarket?

A: 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.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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.

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.