Oil Drain Plug Gasket – Fits Yamaha Outboard 4-Stroke Engines (Replaces 90430-14M09-00)

Oil Drain Plug Gasket – Fits Yamaha Outboard 4-Stroke Engines (Replaces 90430-14M09-00)

This oil drain plug gasket ensures a secure, leak-free seal for the oil drain plug on a wide range of Yamaha 4-Stroke outboard engines. It is designed to meet or exceed original equipment standards for fit and function.

It serves as a direct replacement for Yamaha part numbers 90430-14M09-00 and 90430-14228-00, fitting models such as the F80, F100, F115, and F150.

• Engineered for a direct fit, simplifying installation.
• Made from high-quality, durable gasket material to prevent oil leaks.
• Includes one oil drain plug gasket.

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 Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Oil Drain Plug Gasket (90430-14M09-00)

Installation Guide

1. Position an oil drain pan under the engine's lower unit.
2. Locate and access the engine oil drain plug.
3. Using the correct size wrench, turn the drain plug counter-clockwise to loosen and remove it. Be prepared for oil to flow out.
4. Carefully remove the old gasket from the drain plug. Clean any residue from the plug and the engine case mating surface.
5. Place the new gasket (90430-14M09-00) onto the drain plug.
6. Re-insert the drain plug and hand-tighten it to prevent cross-threading.
7. Torque the drain plug to the manufacturer's recommended specification. Do not over-tighten, as this can damage the threads or gasket.
8. Refill the engine with the correct type and amount of oil, and check for leaks around the drain plug area.

Troubleshooting & FAQ

How do I confirm this gasket fits my specific Yamaha engine?
First, check the "Compatible Engine Models" table on this page. For confirmation, use the "Yamaha Serial Number Guide" linked above to identify your exact model and year. Compare the required OEM part number for your engine against 90430-14M09-00 or 90430-14228-00.

How often should the oil drain plug gasket be replaced?
It is best practice to replace the oil drain plug gasket every time you change the engine oil. Reusing an old, compressed gasket significantly increases the risk of an oil leak.

What are the signs of a failing drain plug gasket?
The most common sign is a slow drip or seepage of oil from the drain plug area. If you notice fresh oil on the ground below your engine or on the lower unit itself, inspect the drain plug and gasket immediately.

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.