Cummins OSB6.7 6 Cylinder 6.7 L Diesel 173 hp Engine, 2012 US EPA Label, CARB Compliant, 5211.6 Engine hrs, Allison 2500 Automatic Transmission, 12000 lb Front Axle, 20000 lb Rears, Meritor Drive Axles, 32000 lb GVWR, 275/80R22.5 Front Tires, 295/75R22.5 Rear Tires, 111 in Wheelbase, PTO, Hydraulic System, Hydraulic Lift 5th Wheel