Volvo D13H425 6 Cylinder 12.8 L 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 12-Speed Automated Transmission, 12350 lb Front Axle, 22700 lb Rears, 35050 lb GVWR, Aluminum Wheels, 295/75R22.5, Hendrickson Air Ride Suspension, 149 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks