Cummins ISX15 6 Cylinder 15 L Diesel 500 hp Engine, 2014 US EPA Label, Requires Diesel Exhaust Fluid, 22064.1 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Allison 4500 6-Speed Automatic Transmission, 13221 lb Front Axle, 46000 lb Rears, 70240 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R24.5 Front Tires, 11R24.5 Rear Tires, Air Lift Pusher Axle, Air Trac Air Ride Suspension, 252 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks