Volvo D13H475 6 Cylinder 12.8 L Ultra Low Sulfur Diesel Engine, 2011 US EPA Label, Requires Diesel Exhaust Fluid, 30103 Engine hrs, Eaton Fuller 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 37478 kg Rears, 49478 lb GVWR, 275/80R22.5 Front Tires, 275/80R22.5 Rear Tires, Air Ride Suspension, 180 in Wheelbase, Air Sliding 5th Wheel