Cummins ISX15 6 Cylinder 15 L Diesel 450 hp Engine, 2015 US EPA Label, Requires Diesel Exhaust Fluid, 17365 Engine hrs, Eaton Fuller Automatic Transmission, 13200 lb Front Axle, 38000 lb Rears, 51200 lb GVWR, Air Ride Cab, 78 in High Rise Sleeper Cab, Bunk Beds, Thermo King Auxiliary Power Unit, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 230 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks