Engine Sensors

Engine Sensors — Temperature, Pressure, MAP & TPS

Modern performance engines — whether running a factory ECU, an aftermarket engine management system, or a standalone EFI conversion — rely on accurate sensor data to deliver optimal fuel delivery, ignition timing, and engine protection. A faulty or incorrect sensor doesn't just cause driveability problems — it can result in the engine management system running unsafe fuelling or ignition maps that cause detonation, overheating, or premature component wear. Getting the right sensor in the right location, correctly calibrated for your engine management system, is fundamental to a properly functioning performance powertrain.

With 64 sensor products from specialists including Holley EFI, Classic Instruments, Haltech, Racepak, and MSD, our sensor range covers the critical monitoring points for temperature, pressure, and throttle position across major American V8 applications.

Coolant Temperature Sensors

Coolant temperature sensors serve a dual purpose in most applications — providing temperature data to the engine management system for fuel and ignition correction, and driving the coolant temperature gauge on the dashboard. These two functions often require different sensor types: a single-wire sensor with a specific resistance curve for gauge driving, and a two-wire sensor with a different characteristic for ECU input. Our range covers both types and the adapters required to run them together where both functions are needed from a single sensor port.

Oil Pressure and Temperature Sensors

Oil pressure sensing is your early warning system against the most destructive failure mode in any engine — oil starvation. A calibrated oil pressure sensor connected to your dash display or data logging system gives you real-time pressure information and, in many setups, the ability to configure low-pressure warnings or engine protection shutdowns. Combined with an oil temperature sensor, you can monitor the complete health of your lubrication system under all operating conditions.

MAP Sensors and Manifold Absolute Pressure

Manifold Absolute Pressure sensors are a core input for speed-density engine management — allowing the ECU to calculate air mass entering the engine without a mass airflow sensor. For boosted applications, a MAP sensor rated appropriately for your boost level is essential — a standard 1-bar MAP sensor saturates at atmospheric pressure and cannot correctly read boost conditions. Our range includes 2-bar and 3-bar MAP sensors suitable for turbocharged and supercharged applications, with mounting adapters for various intake manifold configurations.

Throttle Position Sensors

The throttle position sensor is the driver's direct input to the engine management system — its accuracy and response speed directly affect throttle response and the quality of fuel delivery across the full throttle range. TPS sensors and their connectors are available for LS and traditional carburetted-to-EFI conversion applications where the factory sensor needs replacement or the swap requires a sensor where none previously existed.