Cummins ISX15 6 Cylinder 15 L Ultra Low Sulfur Diesel 450 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 20459 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FRO-15210C 10-Speed Manual Transmission, 13200 lb Front Axle, 38000 lb Rears, Meritor MT-40-14X Drive Axles, 51200 lb GVWR, Air Ride Cab, 52 in High Rise Sleeper Cab, Bunk Heater, Aluminum Outer Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 224 in Wheelbase, Air Sliding 5th Wheel