This throttle position sensor gives information to the ECM (Engine Control Module) about the position of the pedal determining the speed at which the driver is pushing on the accelerator pedal. It is located at the front driver side of the engine inside the bell crank assembly housing. This replacement TPS manufactured by AA Ignition can be installed easily. The voltage of the TPS needs to be set to 0.55v+ before locking in its position. Once set, turn the engine on and slowly push the accelerator pedal to the floor and back (only once) to make sure that the ECM learns the TPS calibration. Fits the following vehicles with 5.9L Cummins Engine: 1998, 1999, 2000, 2001, 2002, 2003, 2004 Ram 2500 1998, 1999, 2000, 2001, 2002, 2003, 2004 Ram 3500 Replaces the following part numbers: 53031576, 53031576AD, 3970085, AP63427, 53031575, 53031575AH, 3970084, AP63428, 56028184A This is a compatible replacement part manufactured by AA Ignition. This throttle position sensor is NOT a genuine OEM part. The associated vehicle models are registered trademarks of their respective owners. These trademarks and part numbers are used in this listing only to identify the vehicles this throttle position sensor fits. AA Ignition is a registered trade mark of GWA Auto Parts Inc.