GCA758-2 255 LPH In-Tank Electric Fuel Pump

The Walbro GCA758-2 is a 255 LPH in-tank electric fuel pump, ideal for EFI swaps and upgrades. It provides a trusted output for typical EFI systems, operating quietly with OEM-style packaging. This pump is compatible with gasoline and ethanol blends, supporting up to approximately 500 wheel horsepower on gasoline and 380 wheel horsepower on E85, assuming optimal conditions like healthy voltage, proper filtration, and a return-style regulator. The kit includes the pump along with essential installation components such as a strainer/sock, short submersible hose, clamps, and a wiring pigtail, making it a popular choice for GM retrofit and LS swap applications. For sustained E85 use, it is recommended to upgrade the entire fuel system, including filters, hose, and seals, as long-term service life may be reduced compared to gasoline. Installation requires confirming the physical fit within your sending unit, including pump length, diameter, and electrical connector type. It is crucial to use a ≤10 μm EFI filter on the pressure side to protect injectors and pair the pump with PTFE AN hose and a return-style EFI regulator for optimal pressure control. This pump is not PWM compatible and should be run at a constant 12-14V supply through a dedicated relay, with pressure regulated by a return-style EFI regulator. The manufacturer provides a 90-day warranty, which requires proper installation practices and filtration to maintain coverage.