P330 PR Tensioner provided by us, is replaced by a single serpentine belt drive, which keeps all pulleys on the same plane and shortens the engine length. This tensioner helps in maintaining optimum belt tension lowers stress on accessory bearings, resulting in longer bearing life and better fuel economy. Our P330 PR Tensioner is a variety of versions available, each designed to fit the strapping used and the needs of the clients. There is no need to re-tension. This is very cost effective to use.