Volvo D13 6 Cylinder Ultra Low Sulfur Diesel 425 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Volvo ATO2612D Automatic Transmission, 12350 lb Front Axle, 22700 lb Rears, 35050 lb GVWR, Aluminum Wheels, 295/75R22.5, Air Ride Suspension, 149 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks