Yamaha Lower Unit Drain Plug Gasket

The Yamaha 90430-08003-00 is a genuine OEM gasket/washer designed to provide a secure, leak-free seal within your Yamaha outboard’s fuel, cooling, or mechanical systems. Manufactured to Yamaha’s exact specifications, this high-quality component ensures proper fitment, optimal performance, and long-lasting durability.

Engineered for precise tolerance and reliable sealing, this OEM washer helps maintain correct pressure and prevents fluid loss—protecting your engine from avoidable damage and ensuring smooth operation on the water.