Gimbal Bearing Grease Seal – Fits Mercruiser Alpha One Gen 1 & 2, Bravo I, II & III (Replaces 26-88416)

Gimbal Bearing Grease Seal – Fits Mercruiser Alpha One Gen 1 & 2, Bravo I, II & III (Replaces 26-88416)

This gimbal bearing grease seal is designed for a wide range of Mercruiser sterndrives, including the Alpha One, Alpha One Generation 2, and all Bravo models (I, II, & III). It provides a reliable seal to protect the gimbal bearing from water intrusion and wear.

As a direct replacement, this part meets or exceeds original equipment specifications, ensuring proper fit and function. It is manufactured from high-quality stainless steel and Nitrile Butadiene Rubber (NBR) for excellent durability and resistance to abrasion and engine fluids.

• Direct Replacement: Installs without modification.
• Durable Construction: Made with a stainless steel housing and NBR rubber for outstanding wear resistance.
• Package Includes: 1x Gimbal Bearing Grease 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.

Technical Specifications

Package Contents

• 1 × Gimbal Bearing Grease Seal (26-88416)

Installation Guide

Professional installation is recommended. This is a general guide and may not match your specific model. Always consult your service manual.

1. Remove the sterndrive: Safely detach the sterndrive from the gimbal housing to access the bearing.
2. Extract the old bearing and seal: Use a slide hammer with a bearing puller attachment to remove the old gimbal bearing. The seal is typically removed with it.
3. Clean and inspect the housing: Thoroughly clean the inside of the gimbal housing where the new seal and bearing will sit. Inspect for any damage or rough surfaces.
4. Install the new seal: Place the new grease seal into the housing, ensuring it is correctly oriented.
5. Install the new bearing: Using a proper bearing installation tool, drive the new gimbal bearing into place until it is fully seated against the housing shoulder. This will also seat the seal properly.
6. Verify alignment: Use an alignment bar to check that the gimbal bearing is correctly aligned with the engine coupler.
7. Reinstall the sterndrive: Once alignment is confirmed, carefully reinstall the sterndrive unit.

Troubleshooting & FAQ

Q: How do I know if this gimbal bearing seal will fit my engine?

A: This seal is specifically designed for Mercruiser sterndrives, including Alpha One (Gen 1 & 2) and all Bravo models (I, II, III). It is a direct replacement for OEM part 26-88416, as well as aftermarket parts like Sierra 18-2094 and GLM 85910. We recommend checking the compatibility table and your original part number to confirm fitment.

Q: What are the signs that my gimbal bearing seal is failing?

A: A primary sign of a failed seal is water intrusion in the gimbal bearing area, which may appear as milky, emulsified grease or rust. This can lead to premature bearing failure, often identified by a roaring or grinding noise from the transom area when the drive is trimmed or turned.

Q: How often should I replace the gimbal bearing seal?

A: The gimbal bearing seal should be inspected annually when the drive is removed for service. It is best practice to replace the seal whenever the gimbal bearing is replaced. This is often done as preventative maintenance every few seasons, depending on usage and operating conditions.

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.