Cummins ISB 6 Cylinder Diesel 200 hp Engine, 2007 US EPA Label, Positive Air Shutoff, 26654 Engine hrs, Allison Automatic Transmission, 12000 lb Front Axle, 24000 lb Rears, 36000 lb GVWR, 295/75R22.5 Front Tires, 275/80R22.5 Rear Tires, Double Frame, Hydraulic Lift 5th Wheel