Gear Housing Oil Seal for Mercury and Johnson Evinrude 26-76868

Prop Shaft Oil Seal – Fits Mercury, Johnson & Evinrude (Replaces 26-76868, 320862)

This high-quality prop shaft oil seal is designed for various Mercury/Mercruiser sterndrives and Mercury outboards, as well as OMC Cobra, Stringer, and Johnson/Evinrude applications. It serves as a direct replacement for multiple OEM part numbers, ensuring a reliable fit and performance for your lower unit.

This seal is a direct replacement for Mercury part numbers 26-76868, 26-14077, 26-30550, 26-73838, and 26-70019. It also replaces Johnson/Evinrude part numbers 320862, 508520, 775424, and 778172.

• Installation Type: Press fit
• Material: Nitrile rubber with a metal case for durability and sealing performance.
• Quantity Note: Most applications require two seals per propshaft for a complete replacement.

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.

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

• 1 x Prop Shaft Oil Seal (Replaces 26-76868 / 320862)

Installation Guide

1. Drain the gearcase lubricant completely into a suitable container.
2. Remove the propeller, followed by the bearing carrier assembly from the gearcase.
3. Carefully remove the old seals from the bearing carrier, taking note of their orientation. Avoid scratching the carrier housing during removal.
4. Thoroughly clean the seal housing in the bearing carrier to remove any old sealant or debris.
5. Lightly lubricate the new seals with marine-grade grease before installation.
6. Using a seal driver or an appropriately sized socket, press the new seals into place. Ensure they are seated squarely and to the correct depth. Note: Most applications require two seals.
7. Reinstall the bearing carrier assembly using new o-rings/gaskets as required and torque to manufacturer specifications.
8. Reinstall the propeller, then refill the gearcase with the recommended lubricant to the proper level. Check for leaks before returning to service.

Troubleshooting & FAQ

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

A: The best method is to match the part number from your service manual to our cross-reference list. You can also check our compatible models tables and use the linked serial number guides to identify your specific engine. Finally, you can measure your old seal; this part is for a 1.187" shaft and fits a 1.692" housing bore.

Q: What are the signs of a failing prop shaft seal?

A: The most common sign is water intrusion into the gearcase, which makes the gear lube look milky or creamy. You might also notice gear oil leaking from the propeller area. Often, the seal fails due to damage from wrapped fishing line, so always check for this during inspection.

Q: Do I need to replace both seals?

A: Yes. Most sterndrive and outboard applications use two seals on the propeller shaft, often installed back-to-back. To ensure a lasting, leak-free repair, it is critical to replace both seals at the same time.

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.