Cummins 6 Cylinder 6.7 L Ultra Low Sulfur Diesel Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Automatic Transmission, 12000 lb Front Axle, 24000 lb Rears, 36000 lb GVWR, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, 116 in Wheelbase, PTO, Hydraulic Lift 5th Wheel