Detroit DD13 6 Cylinder 12.8 L Diesel 500 hp Engine, 2015 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, 10437 Engine hrs, Engine Brake, Automatic Transmission, Differential Lock, 14000 lb Front Axle, 40000 lb Rears, 54000 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5, Airliner Air Ride Suspension, 186 in Wheelbase, Wet Kit, Air Sliding 5th Wheel, Headache Rack