Cummins ISX15 6 Cylinder Ultra Low Sulfur Diesel 450 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 12202 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, 48 in Flat Top Sleeper Cab, 295/75R22.5, Airliner Air Ride Suspension, 237 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks