25195072
Accessory Drive Belt Tensioner
Mack

This tensioner maintains the correct tension on the accessory drive belt, which is essential for the proper operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor. It ensures the belt remains tight enough to prevent slipping while allowing for thermal expansion and contraction. Proper tensioning reduces wear on the belt and pulleys, extending their service life and preventing unexpected breakdowns. An efficient tensioner contributes to the overall reliability of the engine's accessory systems, supporting consistent performance. Source One Parts Center supplies this tensioner as a dependable component to help keep your truck's auxiliary systems functioning smoothly under demanding conditions.