Gimbal Bearing Oil Seal – Fits Mercruiser Alpha One & Bravo Sterndrives (Replaces 26-88416)

Gimbal Bearing Oil Seal – Fits Mercruiser Alpha One & Bravo Sterndrives (Replaces 26-88416)

This high-quality gimbal bearing oil seal is designed for a wide range of Mercruiser sterndrives, including R, MR, Alpha One (Generations I & II), and Bravo (I, II, & III) series from 1978 to current models. It serves as a reliable replacement for multiple OEM and aftermarket part numbers.

Engineered for durability, this seal is constructed from stainless steel with a high-grade Nitrile (NBR) rubber sealing lip, providing excellent resistance to wear, abrasion, and harsh marine environments.

• Direct Replacement: Fits and functions like the original OEM part.
• Durable Construction: Made with a stainless steel housing and a wear-resistant Nitrile (NBR) rubber seal.
• Broad Compatibility: Covers dozens of Mercruiser sterndrive models from 1978 to present.

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 Gimbal Bearing Oil Seal (Replaces 26-88416)

Installation Guide

1. Ensure the sterndrive is trimmed down and disconnect the battery.
2. Following the manufacturer's service manual, remove the sterndrive unit to access the gimbal housing.
3. Use a slide hammer with a seal puller attachment to carefully extract the old oil seal from the gimbal housing.
4. Thoroughly clean the seal seating area inside the housing, removing any old sealant, grease, or debris.
5. Apply a thin layer of 2-4-C marine grease or gasket sealing compound to the outer surface of the new seal.
6. Using a seal driver or a socket of the correct diameter, gently and evenly tap the new seal into place until it is fully seated.
7. Re-install the gimbal bearing if it was removed, and then re-install the sterndrive unit.
8. Reconnect the battery and test for correct operation and for any leaks.

Troubleshooting & FAQ

How can I be sure this gimbal bearing seal fits my Mercruiser drive?
This seal is compatible with a wide range of Mercruiser sterndrives, including Alpha One (Gen I & II), Bravo (I, II, III), and R/MR models. Please check the 'Compatible Engine Models' table and match your sterndrive's model and serial number range to confirm fitment.

What are the signs of a failing gimbal bearing oil seal?
Common signs include water leaking into the bellows (which can lead to gimbal bearing failure), a growling or grinding noise from the transom area, or visible grease leaking out from the drive assembly.

How often should the gimbal bearing seal be replaced?
It is recommended to inspect the seal annually during routine maintenance. We suggest replacing the seal whenever you replace the gimbal bearing or if you notice any signs of wear, cracking, or leakage.

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.

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.