Lower Unit Seal Kit – Fits Johnson/Evinrude 85-140 HP V4 Outboards (Replaces 18-2692)

Lower Unit Seal Kit – Fits Johnson/Evinrude 85-140 HP V4 Outboards (Replaces 18-2692)

This lower unit seal kit is designed for Johnson/Evinrude V4 outboard engines, including models from 85 HP to 140 HP manufactured between 1973 and 1983. It provides the necessary components to restore the integrity of your engine's gearcase and prevent water intrusion or oil leaks.

This kit serves as a direct replacement for several aftermarket and OEM-equivalent part numbers, including Sierra 18-2692, GLM 86712, Mallory 9-74113, and Soxa-Marine 18-2692.

• Includes all essential gaskets, O-rings, and oil seals for a comprehensive lower unit service.
• Engineered for either professional or experienced DIY installation.
• Constructed from high-quality rubber and synthetic materials to meet or exceed OEM specifications.

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 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 Shift Housing Gasket (324670)
• 2 x Oil Seal (321453)
• 1 x Solenoid Cover Gasket (314876)
• 2 x Washer (311598)
• 4 x O-Ring (317178)
• 1 x O-Ring (322598)
• 1 x O-Ring (313446)
• 1 x O-Ring (314728)
• 1 x O-Ring (318372)
• 2 x Oil Seal (330137)

Installation Guide

1. Drain Oil: Begin by completely draining the gearcase oil into a suitable container.
2. Remove Lower Unit: Detach the lower unit assembly from the outboard motor. Refer to your service manual for specific instructions.
3. Disassemble Gearcase: Carefully disassemble the gearcase to access the driveshaft, prop shaft, and shift shaft components where the seals are located.
4. Remove Old Seals: Using appropriate seal pullers or picks, remove all old seals, gaskets, and O-rings. Be careful not to scratch or damage the housing surfaces.
5. Clean Surfaces: Thoroughly clean all mating surfaces, seal bores, and shafts to remove any old sealant, corrosion, or debris.
6. Inspect Components: Check shafts and housings for scoring, wear, or damage that could prevent the new seals from seating properly.
7. Install New Seals: Lightly lubricate the new seals and O-rings with marine grease. Carefully press them into place using a seal driver or appropriately sized socket, ensuring they are seated evenly.
8. Reassemble: Reassemble the gearcase components in the reverse order of disassembly, making sure to torque all fasteners to the manufacturer's specifications.
9. Refill Oil: Once the lower unit is reassembled, fill it with the recommended type and amount of marine gear lube. Check for any leaks around the drain and vent plugs.

Troubleshooting & FAQ

Q: How do I confirm this seal kit fits my specific Johnson/Evinrude engine?

A: The best way is to check your engine's model, horsepower, and year against the compatibility chart provided on this page. You can also compare the part numbers listed (Sierra 18-2692, GLM 86712, etc.) to your existing service records or a parts catalog for your motor.

Q: What are the common signs that my lower unit seals are failing?

A: The most common sign is a "milky" or creamy appearance in your gearcase oil, which indicates water has mixed with the oil. You may also notice oil leaking from the propeller shaft area or around the drain/fill screw plugs.

Q: How often should I inspect or replace my lower unit seals?

A: It is good practice to inspect your gear lube at least once a season or every 100 hours of use. We recommend replacing the lower unit seals whenever the gearcase is disassembled for service or if you notice any signs of water intrusion or oil 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.