Yamaha - Fuel Pump Damper Fuel System Stabilization Component 6FM-13781-00-00. Overview. The Yamaha Fuel Pump Damper 6FM-13781-00-00 is one of those parts that smooths things out behind the scenes so your engine runs steady. When it starts to wear out, you might notice inconsistent fuel delivery, slight surging, or uneven performance at certain speeds. It helps absorb pressure fluctuations in the fuel system, keeping everything balanced. If your motor feels a little off but nothing obvious is wrong, this is one of those components worth checking.. Key Features. • Fuel Pressure Stabilization - Helps smooth out fuel flow by reducing pressure fluctuations.. • OEM Fit Precision - Designed to match Yamaha fuel system specifications for proper function.. • Improved Engine Consistency - Supports steady performance and reduces surging or hesitation.. • Durable Internal Design - Built to handle continuous fuel pressure and marine conditions.. Compatibility. Compatible with select Yamaha outboar