Fuel Pump Rebuild Kit

The Holley Fuel Pump Rebuild Kit (MPN 12-805) is an essential maintenance solution for owners and builders working with Holley Red electric fuel pumps. As a seasoned mechanic, you know that fuel pump performance directly impacts engine reliability and fuel system integrity—especially in modified or high-demand applications. This rebuild kit addresses wear in the internal components that naturally degrade over time, restoring your pump to OEM specifications without requiring full replacement.

This electric fuel pump rebuild kit includes a complete check valve assembly and all necessary internal seals and wear components designed specifically for Holley Red fuel pumps. The check valve is the critical component that prevents fuel backflow and maintains system pressure when the pump is not running—a function that deteriorates as gaskets harden and internal springs lose tension. By replacing these wear items rather than the entire pump housing, you preserve calibrated flow characteristics and maintain compatibility with your existing fuel system plumbing and mounting configuration.

Whether you're troubleshooting inconsistent fuel pressure, replacing a pump that's lost prime, or performing preventive maintenance on a carbureted or EFI setup, this rebuild kit delivers a cost-effective alternative to full pump replacement. Street machines, race cars, and vintage restorations all benefit from periodic fuel system service, and the Holley Fuel Pump Rebuild Kit is sized and engineered to fit within the compact Holley Red pump housing (5 x 2.1 x 7 inches overall). Installation requires basic mechanical skill and access to a fuel pump removal tool—a straightforward job that can be completed in under an hour.