The life of a timing belt is nothing more than the monotonous spinning in circles for some purpose that the belt itself cannot comprehend. As it winds its way around the face of your motor, though, it can wear out the timing belt tensioner pulley that it rolls across. When that happens, you'll want to get your hands on a new timing belt tensioner pulley right away before your belt slips off and causes all kinds of expensive damage. Luckily, you can get a new timing belt tensioner pulley at AutoAnything.