10AN Uni Bypass Fuel Pressure Reg Black

The 10AN Uni Bypass Fuel Pressure Regulator by REDHORSE PERFORMANCE is engineered for serious engine builders and street/strip mechanics who demand precise fuel delivery control. Whether you're tuning a carbureted or EFI platform, a bypass regulator maintains consistent fuel pressure across varying engine loads and RPM ranges, preventing lean-out conditions and fuel starvation that can cause detonation or performance loss. This universal design accepts 10AN inlet and outlet ports, making it a drop-in solution for custom fuel systems, fuel cell installations, and rebuilt carburetors requiring dead-head style regulation.

Built from aluminum construction with a black powder-coated finish, this bypass regulator operates on a simple yet reliable internal spring and poppet design that diverts excess fuel back to the tank when pressure exceeds the set threshold, keeping fuel rail pressure stable without drawing additional amperage like electric regulators. The 10AN port sizing is optimized for moderate to high-volume fuel delivery systems, offering excellent flow capacity while maintaining tight diaphragm sealing and low-pressure drop during normal operation. The compact footprint (2.85 x 2.75 x 5.05 inches) allows mounting flexibility in engine bays and fuel cell compartments where space is limited, and the 0.96 lb weight keeps overall vehicle mass minimal—critical for weight-sensitive builds.

Mechanics restoring vintage fuel systems, drag racers optimizing carb fuel delivery, and performance EFI tuners benefit most from this universal regulator's plug-and-play compatibility and adjustable pressure retention. Installation pairs seamlessly with aftermarket fuel pumps, custom-bent fuel lines, and both mechanical and electronic fuel management systems. Confirm your fuel pump pressure rating and carburetor/injector spray pattern requirements before final installation, as bypass regulators function best when paired with a fuel pump rated 10–15 PSI above your target rail pressure, allowing the regulator to maintain your desired set point while diverting excess volume efficiently back to the tank.