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 AT2612D Automated Transmission, Double Differential Locks, 12500 lb Front Axle, 38000 lb Rears, MT40-14X Drive Axles, 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, Volvo Air Ride Suspension, 254 in Wheelbase, PTO