In high-stakes racing, noticing a sudden drop in fuel pressure can mean the difference between finishing the race and destroying an expensive motor.
Specifically factory-calibrated to trip at exactly 4 PSI, this sender is the ideal safeguard for carbureted race cars (which typically operate on low-pressure 5 to 7 PSI fuel systems). If a fuel pump starts failing, a line gets pinched, or the fuel cell runs dry, this switch instantly sends a signal to the dash before the engine leans out and suffers catastrophic detonation. Featuring a standard 1/8" NPT thread, it easily threads into almost any aftermarket fuel pressure regulator, log, or rail.
Key Features
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Instant Warning Trigger: Calibrated to send an immediate electrical signal the moment fuel pressure dips to the dangerous 4 PSI threshold, giving the driver crucial seconds to shut down the engine.
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Carbureted Engine Protection: The 4 PSI activation point is perfectly tuned for traditional carbureted V8s, dirt late models, and circle track cars that rely on low-pressure, high-volume fuel delivery.
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Universal 1/8" NPT Fitting: Engineered with a standard 1/8-inch National Pipe Thread base, allowing it to screw directly into common racing fuel pressure regulators and inline adapters without requiring extra plumbing.
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Rugged Racing Construction: Built by Longacre to withstand extreme under-hood temperatures, violent chassis vibrations, and the harsh chemical exposure of racing fuels and E85.
