Cummins ISB 6 Cylinder 6.7 L Ultra Low Sulfur Diesel 250 hp Engine, 2014 US EPA Label, Requires Diesel Exhaust Fluid, 4770.6 Engine hrs, Air Conditioner, Cruise Control, Allison Automatic Transmission, 8500 lb Front Axle, 17500 lb Rears, 26000 lb GVWR, 11R22.5, Air Ride Suspension, 251 in Wheelbase, Liftgate