Feuling Head Temp SensorThe cylinder head temperature sensor is an electronic engine management sensor found on the cylinder head.The cylinder head temperature sensor measures the temperature of the cylinder head. The data is then sent to the ECU to calculate timing and fuel ratio for the engine. Like all sensors, they can fail over time. This may cause long cranking time, decrease in power, acceleration, and fuel economy. If your Engine light is on, have the code scanned you may have a faulty cylinder head temp sensor. FITS: Twin Cam Engines 99-17 Electronic engine management sensor found on the cylinder head Measures the temperature of the cylinder head Data is then sent to the ECU to calculate timing and fuel ratio for the engine Like all sensors, they can fail over time and this may cause long cranking time,decrease in power, acceleration and fuel economy Made in the U.S.A. Replacement Part for OEM Number(s) 3244699 Specs PRODUCT NAME SENSOR TYPE CYLINDER HEAD TEMPERATURE UNITS EACH RIDING STYLE STREET