Fuel Pressure Sender 1/8in. NPT 2-7psi

The Longacre Fuel Pressure Sender 1/8in. NPT 2-7psi (model 52-43020) is an essential electronic pressure monitoring component for engine builders, race technicians, and serious automotive enthusiasts who demand real-time fuel system diagnostics. This adjustable pressure sender allows you to monitor fuel delivery at the rail or regulator with precision, making it indispensable when tuning fuel-injected engines, carbureted systems with electric pumps, or verifying fuel system health during diagnostics and performance modifications.

Built to Longacre's proven standards, this fuel pressure sender features a 1/8 inch NPT male threaded connection for secure installation into fuel rails, manifolds, or regulator ports without additional adapters on most aftermarket systems. The 2–7 psi operating range makes it ideal for low-pressure carbureted applications, electric fuel pump circuits, and pressure-regulator monitoring on street and racing engines alike. The sender outputs an electronic signal proportional to pressure, which integrates seamlessly with aftermarket gauges, data loggers, and engine management systems to provide live feedback during tuning sessions, dyno pulls, or street driving.

Mechanics and tuners benefit most from this sender when diagnosing fuel delivery issues, validating regulator function, or documenting fuel pressure stability across rpm range and load conditions. Its compact form factor and lightweight design (0.16 lbs) allow flexible mounting in engine bays with limited space. Installation requires only a clean 1/8 NPT port and electrical connection to your gauge or data acquisition system; ensure proper grounding and use quality shielded wiring to minimize signal noise on high-ignition-output engines.