Billet By-Pass Regulator w/Return

The Quick Fuel Technology Billet By-Pass Regulator with Return (Model 30-1900QFT) is a precision fuel pressure regulator engineered for high-performance fuel systems running 4.5 to 9 psi. Built from aluminum with red and clear anodized finish, this in-line regulator combines durability with reliable pressure management across gasoline, E85, and methanol fuel blends. The bypass design with dedicated return line provides stable, tunable fuel pressure critical for carburetor and injection systems requiring consistent delivery and pressure relief capability.

This regulator features 8 AN female O-ring connections for inlet, outlet, and return lines—a standard in performance fuel systems that ensures leak-free coupling and allows easy integration into existing plumbing. The 1/8-inch NPT gauge port enables real-time pressure monitoring, essential for tuning fuel delivery curves during development or diagnostics. The bypass configuration allows excess fuel to safely return to the tank, preventing overpressurization while maintaining target operating pressure. Aluminum construction keeps weight minimal without sacrificing strength, and the anodized finish resists corrosion from fuel exposure and ambient elements.

Ideal for custom engine builders, hot rod enthusiasts, and performance tuners, this regulator fits applications ranging from street cars to bracket racing platforms. The adjustable pressure range (4.5–9 psi) accommodates both gravity-feed and low-volume mechanical pump systems. Whether you're building a carbureted engine or fine-tuning a returnless fuel system, the Quick Fuel Technology regulator delivers the pressure stability and flow capacity needed for consistent performance without fuel starvation or system flooding.