Cummins 4954905 Coolant Temperature Sensor 98.5-02 / 04.5-18 Dodge 5.9L / 6.7L Cummins

If your coolant temperature sensor is not able to accurately determine the temperature of your coolant, it will send faulty readings to your ECM, which can cause your fan to not engage at the correct time, possibly even leading to overheating. This is a genuine Cummins direct replacement unit.