Oil Seal – Fits Johnson/Evinrude Outboards & OMC Sterndrive (Replaces 0330137, 0313398)

Oil Seal – Fits Johnson/Evinrude Outboards & OMC Sterndrive (Replaces 0330137, 0313398)

This replacement shaft oil seal is designed for use on various Johnson/Evinrude outboard motor midsections and OMC Cobra sterndrive lower gearcases. It acts as a crucial barrier to retain gear lube and prevent water, dirt, and other contaminants from entering the gearcase.

It directly replaces multiple OEM and aftermarket part numbers, ensuring a precise fit and reliable performance. Please verify compatibility by checking your original part number and dimensions.

• Installation Method: Direct press-fit replacement for a secure seal.
• Function: Forms a physical barrier to retain lubricating oil and block external contaminants.
• Material: Constructed with a durable rubber housing and a reinforcing metal case for longevity.

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 Oil Seal (Replaces 0330137/330137)

Installation Guide

1. Ensure the engine is off and the battery is disconnected. Secure the outboard or sterndrive unit.
2. Drain the gearcase oil into a suitable container.
3. Disassemble the necessary components to access the old oil seal (this may involve removing the propeller, bearing carrier, or driveshaft housing).
4. Carefully pry out the old seal using a seal puller or flat-head screwdriver, taking care not to scratch the housing surface.
5. Thoroughly clean the seal bore and shaft surface, removing any old sealant, corrosion, or debris.
6. Apply a light coat of marine grease to the inner and outer diameters of the new seal.
7. Position the new seal squarely over the bore with the spring side facing the oil it will retain.
8. Gently and evenly press the new seal into place using a seal driver or a socket with a matching outer diameter until it is fully seated.
9. Reassemble all components in reverse order of removal.
10. Refill the gearcase with the manufacturer-recommended gear lube to the correct level.
11. Check for any leaks around the new seal before and after running the engine.

Troubleshooting & FAQ

Q: How do I confirm this oil seal fits my engine?
A: This seal is designed for a broad range of Johnson/Evinrude outboards and OMC sterndrives. The best way to confirm fitment is to match your old part number to one listed in our "Part Number Cross-Reference" table (e.g., 0330137, 18-2001). Additionally, please compare the dimensions—O.D. 1.624", I.D. 1.125", and Width 0.250"—with your original part.

Q: What are the signs of a failing oil seal?
A: The most common indications of a bad seal include visible oil leaking from the gearcase, particularly around the propeller shaft or driveshaft area. Another sign is finding water in your gear lube when you drain it, which often gives the oil a milky or cloudy appearance.

Q: What is the recommended way to install this seal?
A: This is a press-fit seal. For a successful installation, the old seal must be carefully removed without damaging the housing, the area must be cleaned, and the new seal must be pressed in evenly using a proper seal driver or socket. We recommend professional installation if you are unfamiliar with this process.

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.