Fuel Pressure Regulator - 1-4psi

The Quick Fuel Technology Fuel Pressure Regulator 1-4 psi (Model 30-804QFT) is an in-line fuel system component designed to maintain stable fuel pressure in carbureted and traditional fuel systems. Built from aluminum in a natural finish, this regulator accepts 3/8-inch NPT inlet and outlet connections, making it compatible with standard fuel line configurations found in classic and custom automotive applications. The 1 to 4 psi operating range is specifically engineered for naturally aspirated gasoline engines that rely on mechanical fuel delivery and carburetor regulation.

Pressure regulation at this low range is critical for carburetor function and fuel atomization. Insufficient pressure results in lean mixture and poor throttle response; excess pressure floods the carburetor bowl and causes fuel overflow. The in-line design allows installation between the fuel pump and carburetor inlet, giving the user direct control over delivery pressure without requiring fuel return lines. Aluminum construction resists corrosion in typical automotive fuel environments while remaining lightweight. The 3/8-inch NPT ports are industry-standard connections for small-block engines, muscle cars, hot rods, and restoration projects that retain original fuel delivery architecture.

This regulator is suited for builders and owners of carbureted vehicles who need precise fuel pressure tuning without converting to a high-pressure electronic fuel injection system. It addresses a fundamental requirement in carburetor fuel systems: maintaining consistent pump output regardless of engine load or ambient temperature changes. Proper fuel pressure regulation improves cold-start reliability, reduces carburetor flooding, and extends carburetor life. The compact footprint (3.45 x 2.3 x 5.8 inches) allows flexible mounting in engine bays with space constraints.