A leaky crankcase drain might seem like a small issue, but over time, it can lead to oil loss, contamination, and engine wear. That’s where the Sierra 18-0755 Crankcase Drain Gasket comes in. Designed as a direct replacement for Yamaha part numbers 90430-14M09-00, 90430-14228-00, and 90430-14228-00, this gasket ensures a secure, leak-proof seal for a wide range of Yamaha four-stroke outboards from 9.9HP to 300HP.

Built to handle the demanding marine environment, this gasket is crafted from high-quality materials that resist heat, oil, and exposure to saltwater. Whether you’re performing a routine oil change or addressing a persistent leak, installing a fresh crankcase drain gasket is a simple but essential step in keeping your engine running strong.

Why It’s a Must-Have:

• Prevents Oil Leaks – Keeps oil where it belongs, reducing mess and engine wear.
• Durable Construction – Withstands heat, pressure, and exposure to marine conditions.
• OEM-Compatible Fit – Designed for Yamaha outboards, ensuring seamless replacement.
• Hassle-Free Installation – A small but important part that makes oil changes smooth and worry-free.

Neglecting a worn gasket can lead to unexpected maintenance headaches. Swap it out during your next oil change and keep your Yamaha running at peak performance.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.