0 Mack MP8, , Belt Tensioners, Fits to: Other Other, (New) Mack MP8(fan) BELT TENSIONER. P/N-38633 Material-Aluminum Pulleys-1 For more information about this item call. We ship Worldwide. 929 W. Pulaski Hwy Elkton, MD 21921, Serial# Other, Casting# Other, Truck Year OTHER