Cummins ISX15 6 Cylinder 15.0 L Ultra Low Sulfur Diesel 450 hp Engine, 2016 US EPA Label, Requires Diesel Exhaust Fluid, 28256 Engine hrs, Engine Brake, Eaton Fuller Automated Transmission, 12350 lb Front Axle, 40000 lb Rears, 52350 lb GVWR, Air Ride Cab, 68 in Mid Roof Sleeper Cab, Aluminum Wheels, 295/75R22.5, Air Ride Suspension, 230 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks