Fuel Pump Shutoff Switch

The LONGACRE fuel pump shutoff switch is a critical safety component designed for racing, off-road, and modified vehicles where engine shutdown during impact or emergency conditions is essential. This pressure switch activates at 12 psi, cutting fuel supply to protect occupants and minimize fire risk in accident scenarios. Built for automotive enthusiasts and professional motorsports applications, this compact switch integrates seamlessly into fuel system architectures where failsafe protection matters most.

Operating on a simple pressure-differential principle, the fuel pump shutoff switch monitors fuel line pressure and triggers de-energization of the fuel pump when system pressure drops below the 12 psi threshold—typical during impact or sudden deceleration. The switch features a 1/8 inch NPT male port for direct inline installation into oil or fuel lines, allowing reliable integration without adapter complexity. Its compact 3.1 x 2 x 3.55 inch footprint and lightweight 0.26 lb construction make it ideal for confined engine bays and weight-sensitive builds, while robust construction ensures consistent operation across high-vibration racing environments.

Professional drag racers, circle track competitors, and street rod builders rely on fuel pump shutoff switches to meet safety regulations and protect fuel systems during high-G events. Installation requires routing the switch into your fuel system pressure line upstream of the fuel injectors or carburettor, with proper NPT-to-hose adapter fittings to match your existing plumbing. Compatibility spans carburetor-fed, EFI, and hybrid fuel systems; verify 12V electrical compatibility with your fuel pump relay circuit before installation. This single-switch solution eliminates complex relay logic while delivering motorsports-grade reliability.