Fuel Pressure Regulator EFI Style 35-90psi Blue

The Edelbrock Fuel Pressure Regulator EFI Style 35-90psi in blue is a precision electronic fuel injection regulator engineered for street and performance fuel systems running gasoline, E85, or methanol. Designed as an in-line regulator, it maintains stable fuel pressure across a wide operating range, critical for consistent engine performance and fuel atomization across varying load conditions. The 35–90 psi adjustment range accommodates both stock EFI applications and modified high-performance engines requiring elevated fuel pressure for injector response and fuel delivery optimization.

This Edelbrock regulator features a robust aluminum construction with black anodized finish, delivering corrosion resistance and durability in engine bay environments. The 10 AN female O-ring inlet and outlet connections, paired with a 6 AN female O-ring return line and 1/8-inch NPT gauge port, integrate seamlessly into modern EFI fuel systems. The bypass design allows excess fuel to return to the tank, preventing pressure spikes and protecting injectors and fuel rails from damage during acceleration or load transitions. This architecture is standard across professional fuel system builders and tuners because it provides dynamic pressure stability without external electronic intervention.

The 35–90 psi range suits street EFI conversions, carbureted-to-fuel-injection retrofits, and performance builds where fuel pressure must scale with engine demand. Builders and engine tuners rely on this regulator's wide adjustment window to dial in precise fuel pressure for port-injected or direct-injected platforms. Compatibility with multiple fuel types—gasoline, E85 ethanol blends, and methanol—makes it versatile across different fuel system architectures and racing applications. At 1 lb and compact dimensions (3.8 x 3 x 4.7 inches), installation fits tight engine compartments without sacrificing functional performance.