Pressure Switch 20 PSI

The Allstar Performance Pressure Switch 20 PSI is a precision-engineered fluid monitoring component designed for high-performance engine systems and hydraulic applications. This electromechanical switch activates at 20 pounds per square inch, making it ideal for oil pressure monitoring, warning light circuits, and automated pressure-dependent functions in racing engines, marine systems, and industrial equipment. Whether you're building a competition engine or maintaining critical hydraulic systems, this switch provides reliable pressure detection at a critical threshold point.

Engineered for dependable operation, the Pressure Switch 20 PSI features a 1/8 inch NPT male threaded connection that integrates seamlessly into existing oil and fluid delivery systems. The switch operates on a mechanical binary principle—remaining open below 20 PSI and closing at or above the set pressure threshold, sending an electrical signal to gauges, warning lights, or engine management systems. Its compact form factor (3.5 x 1.05 x 4.55 inches) and lightweight design (0.12 lbs) allow flexible mounting in tight engine bay configurations without compromising performance or reliability. The rugged construction ensures function across temperature and vibration environments typical of both street and track applications.

Builders and technicians trust the Allstar Performance Pressure Switch 20 PSI for oil system diagnostics and protection circuits in small-block engines, LS platforms, and custom builds where early warning of pressure loss is critical to engine survival. The 1/8 NPT male inlet accepts standard pressure line adapters and tees, making installation straightforward in both OEM and retrofit scenarios. This switch serves dual purposes: illuminating dash warning lamps when oil pressure drops dangerously low and integrating with modern engine control modules for automated shutdown or limp-home protection. For serious engine builders and performance enthusiasts, this component is an economical yet essential safeguard.