Gear Housing Oil Seal – Fits Mercury Marine 105-250 HP Outboards & MerCruiser Alpha One/Gen 2 Stern Drives (Replaces 26-14077)

Gear Housing Oil Seal – Fits Mercury Marine 105-250 HP Outboards & MerCruiser Alpha One/Gen 2 Stern Drives (Replaces 26-14077)

This gear housing oil seal is designed to fit Mercury Marine outboards ranging from 105 to 250 HP and MerCruiser Alpha One (1983–1990) and Alpha One Gen 2 (1991–present) stern drives. It is also compatible with Force/Chrysler 90-150 HP outboards (1989–1994) and some OMC Cobra and Stringer stern drives.

The seal functions to prevent oil leaks and ensure proper lubrication within the gear housing and propeller shaft areas, providing reliable protection under standard marine oil seal operating conditions.

• Includes 2 oil seals (26-14077)
• Installation via press-fit
• Compatible with multiple marine brands and models

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, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For MerCruiser owners, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Force/Chrysler owners, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For OMC owners, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 2 x Oil Seal (26-14077)

Installation Guide

Installation of the gear housing oil seal should be performed with care to ensure proper fit and function. The seal is designed for press-fit installation.

1. Clean the gear housing and propeller shaft area thoroughly to remove debris and old seal residue.
2. Inspect the housing bore for damage or wear before installing the new seal.
3. Lubricate the seal lip lightly to prevent damage during installation.
4. Press-fit the oil seal evenly and squarely into the gear housing bore, avoiding any distortion.
5. Ensure the seal is fully seated flush with the housing surface.
6. Reassemble the propeller shaft and gear housing components as per manufacturer instructions.
7. Check for leaks after installation by running the engine in a controlled setting.

Troubleshooting & FAQ

• How do I confirm this oil seal fits my engine? Confirm your engine model and year in the compatible engine models table above, and compare the OEM part number with your existing seal.
• What are the differences compared to the OEM part? This listing is an aftermarket replacement part built to OEM specifications using comparable-grade materials; it is not an OEM component but is inspected for consistent performance.
• How often should I replace this oil seal? Replacement intervals depend on usage and operating conditions; inspect regularly for leaks or damage, and replace as required to maintain lubrication integrity.
• What are common signs of seal failure? Look for oil leaks around the gear housing, unusual noises, or decreased performance potentially caused by lubrication loss.
• 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 shipping9typically 515 days worldwide1and 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 existeven if your model is listeddo 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 515 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.