Volvo D13H425 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 425 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Volvo AT2612D 12-Speed Automated Transmission, Double Differential Locks, 2.64:1 Axle Ratio, Air Ride Cab, 42 in Flat Top Sleeper Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Steerable Air Lift Pusher Axle, Air Ride Suspension, 268 in Wheelbase, PTO, Wet Kit