Sierra Fuel Pump Diaphragm for Yamaha Outboard Motors

The Sierra fuel pump diaphragm for Yamaha outboard motors is a replacement part for the mechanical fuel pump. It is also called a fuel pump membrane or fuel pump repair diaphragm. The diaphragm flexes with each pump cycle to draw fuel from the tank and deliver it to the carburetor or fuel system. A worn, hardened, or torn diaphragm can cause hard starting, fuel starvation, rough running, or loss of power.

Key Features:

• Aftermarket replacement diaphragm for Yamaha outboard fuel pumps
• Made to restore proper fuel pump pressure and flow
• Flexible construction is intended to hold up to marine fuel exposure
• Supports fuel pump rebuilds as part of routine outboard maintenance
• Sierra markets its replacement parts as meeting or exceeding OEM specifications

Sierra has supplied marine engine parts for many years. Replacing the diaphragm during a fuel pump rebuild or seasonal tune-up helps keep fuel delivery steady and the engine running smoothly. Each variant in this product line has its own part number, so choose the one that matches your outboard's fuel pump.