Volvo D13J500 12.8 L Diesel 500 hp Engine, 2015 US EPA Label, Requires Diesel Exhaust Fluid, Volvo ATO2612D Automatic Transmission, Double Differential Locks, 13200 lb Front Axle, 45000 lb Rears, 3.73:1 Axle Ratio, 58600.0 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R24.5 Front Tires, 12R22.5 Rear Tires, Volvo Air Ride Suspension, 202 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks