Volvo D13F485 12.8 L Diesel 338 hp Engine, 2008 US EPA Label, Eaton Fuller RTLO-16918B 18-Speed Manual Transmission, Differential Lock, 14600 lb Front Axle, 46000 lb Rears, 60600 lb GVWR, Air Ride Cab, 315/80R22.5 Front Tires, 11R22.5 Rear Tires, Rubber Suspension, 204 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks