Yamaha - Fuel Pump Gasket 1 Fuel System Seal 6K8-24431-20-00. Overview. The Yamaha Fuel Pump Gasket 1 6K8-24431-20-00 is one of those parts you don't think about until fuel starts showing up where it shouldn't. It seals the fuel pump assembly so everything stays tight and pressure stays consistent. When this gasket wears out, you'll often get rough running or small leaks that turn into bigger issues fast. Keeping a fresh gasket in place is a simple way to avoid fuel system headaches on the water.. Key Features. • Fuel System Sealing - Creates a tight seal to prevent fuel leaks within the pump assembly.. • OEM Fit Accuracy - Designed to match Yamaha dimensions for proper alignment and sealing.. • Fuel-Resistant Material - Built to handle constant exposure to gasoline without degrading.. • Maintains System Pressure - Helps keep fuel delivery steady and consistent.. Compatibility. Compatible with select Yamaha outboard engines using fuel pump gasket 1 configuration.Commonly used in Yamaha