OE Number of Belt Tensioner:21819687/24201573/20739751Fitment of Belt Tensioner Assembly: for Volvo D13 2017-2021for MACK MP8 Truck EngineSpecification of Automatic Belt Tensioner Pulley Assembly:Type: Belt TensionerMaterial: MetalOther Name: Tensioner Pulley, Drive Belt Tensioner Pulley, Belt TensionerInclude: 1Pc x Belt Tensioner AssemblyFeature of Belt Tensioner w/Pulley:Replace the old or broken belt tensioner to avoid noisy tensioner pulley and no longer withstand belt noise.Ensure that the drive belt always maintains the proper tension, supports the belt and guides it to run in a predetermined path, and reduces the vibration and noise generated by the belt during operation.Solid metal for wear resistance, not easy break or deform, ensure longer service life.
