This is the part of the TPS (Throttle Position Sensor) or APPS (Accelerator Pedal Position Switch) that actually fails. When you buy it from Chrysler they only sell it with the "Belcrank" at $500 plus dollars, which is a waste of your hard-earned money. Therefore, buy this unit and install it in the bellcrank and you will save lots of money. Features: This sensor has a pigtail to adapt to the 6 prong stock connection. This is JUST the electronic piece. It does not include the bracket. THIS IS AN AFTERMARKET PIECE. IT INCLUDES A PIGTAIL. Works on all automatic or manual transmission equipped trucks. Does not work on trucks with the APPS installed under the driver's side battery. No calibration is needed, though there are instructions included to calibrate it if you want to make sure you get maximum horsepower at full throttle. Vehicle Applications: 1998.5-2003 Dodge Cummins 5.9L Diesel Fitment Note: SOME 2004.5 TRUCKS DO HAVE OLD STYLE TPS, PLEASE CHECK THE SECOND PICTURE TO CHECK WHICH STYLE TPS YOUR TRUCK HAS. IF YOUR TRUCK IS A MANUAL, PLEASE CHECK THE SECOND PICTURE AS WELL TO BE SURE YOU HAVE THIS STYLE TPS. To verify that your TPS/APPS is indeed bad, you can use this test procedure. **NOTE: If this part has been installed on your truck it is non-returnable.** More Information: Install Guide