6 Cylinder Diesel Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Automatic Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000.0 lb GVWR, Air Ride Cab, 11R22.5, Air Ride Suspension, 180 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks