Fuel Press switch 4psi

The QUICKCAR RACING PRODUCTS Fuel Press switch 4psi is a compact electric pressure switch engineered for fuel system monitoring in marine engines, high-performance boats, and racing applications. This precision instrument activates at exactly 4 pounds per square inch, providing reliable on-demand pressure detection that protects your engine from fuel starvation and over-pressure conditions. Built for serious boaters and engine builders who demand dependable fuel management, the fuel press switch integrates seamlessly into fuel delivery systems where early warning of pressure anomalies can prevent catastrophic engine failure.

This electric pressure switch features a 1/8 inch NPT male threaded port, allowing direct integration into fuel rails, fuel filter housings, or manifold blocks without adapters on compatible installations. The 4 psi setpoint triggers cleanly and repeatably, ideal for low-pressure fuel systems common in carbureted engines, mechanical fuel pumps, and EFI systems operating below conventional pressures. The compact form factor—weighing just 0.11 pounds and measuring 3.45 x 1.05 x 4.55 inches—fits tight engine compartments and enclosed fuel system configurations where space is at a premium. Durable construction ensures the switch withstands vibration, temperature cycling, and the corrosive environment of marine applications.

Marine engine builders, restoration shops, and performance boaters rely on this fuel press switch for dashboard gauges, warning lights, and fuel pump relay circuits that maintain system integrity during extended time on the water. The NPT male thread accepts standard 1/8 inch fittings and adapters, making installation straightforward on aftermarket fuel systems, custom fuel injection retrofits, and original equipment engine blocks. Whether you're upgrading a vintage marine carburetor system, diagnosing persistent fuel delivery issues, or building a race-proven fuel management setup, this pressure switch delivers the precision monitoring that separates reliable performance from engine trouble.