This belt tensioner (Part Number: AP63421) is a perfect fit for 1998 - 2003 Ford F - Series and E - Series vehicles with a 7.3L Powerstroke engine. The OEM part numbers are F8UZ6B209CA and BT50. It ensures proper belt tension, helping your engine run smoothly and efficiently.

Using this belt tensioner is easy. First, make sure your vehicle's engine is turned off and cooled down. Locate the old belt tensioner on your engine. Remove the old one carefully by following the vehicle's maintenance manual. Then, install the new belt tensioner (AP63421) in its place. Make sure it is properly secured. When it comes to maintenance, regularly check the tensioner for any signs of wear or damage. If you notice any strange noises or vibrations from the engine area, it might be a sign that the tensioner needs to be inspected. Also, keep the tensioner clean to prevent dirt and debris from affecting its performance.