Cummins ISX15 6 Cylinder 15 L Ultra Low Sulfur Diesel 400 hp Engine, 2010 US EPA Label, Requires Diesel Exhaust Fluid, 206527.7 Engine hrs, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, 3.70:1 Axle Ratio, 52000 lb GVWR, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Paccar Air Ride Suspension, 176 in Wheelbase, Air Sliding 5th Wheel