Fit For Cummins ISX QSX Engine Include the Following Vehicle: Volvo VNLVolvo VNMFreightliner FS65Freightliner CascadiaFreightliner CoronadoPeterbilt 378Peterbilt 367Peterbilt 379Peterbilt 386Peterbilt 387Peterbilt 388Peterbilt 389Peterbilt 357Peterbilt 567Peterbilt 579Peterbilt 587Kenworth T800Kenworth T880Kenworth T600AKenworth T2000Kenworth W900Kenworth T660Kenworth T680Kenworth T700Mack CLInternational Harvester 9200i SBAInternational Harvester 9400iInternational Harvester SBA5600iInternational Harvester 5500iInternational Harvester 5600iInternational Harvester ProStarInternational Harvester LoneStarWestern Star 4900FAWestern Star 4900SAWestern Star 4900EXSterling Truck AT9500Sterling Truck LT9500Package Include: Belt Tensioner Assembly x1