6 Cylinder 12.9 L 505 hp Engine, US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Automated Transmission, 13220 lb Front Axle, 46000 lb Rears, 59220 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5, Air Ride Suspension