MaxxForce 13 6 Cylinder 12.4 L Ultra Low Sulfur Diesel 450 hp Engine, 2013 US EPA Label, 15,422 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller Automated Transmission, Differential Lock, 12,350 lb Front Axle, 34,000 lb Rears, 46,350 lb GVWR, Air Ride Cab, 56 in Mid Roof Sleeper Cab, Bunk Heater, Aluminum Rear Wheels, 11R22.5 Front Tires, 455/55R22.5 Super Singles Rear Tires, International Air Ride Suspension, 233 in Wheelbase, Dual Fuel Tanks, Air Sliding 5th Wheel.