Belt tensioners are used to keep proper belt tension on the supercharger
serpentine drive belt. Each supercharger kit includes a new belt
tensioner if the stock tensioner is not designed to be used for that
specific application. We recommend that the
belt tensioner is checked periodically or at least when performing the
required supercharger traction oil change every 50,000 miles. If it
needs to be replaced, select the appropriate part number listed below.