Paccar MX-13 6 Cylinder 12.9 L Ultra Low Sulfur Diesel 431 hp Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 23000 lb Rears, 35000 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5, Paccar Air Ride Suspension, 160 in Wheelbase, Dual Fuel Tanks