Cummins ISX15 6 Cylinder Ultra Low Sulfur Diesel 450 hp Engine, US EPA Label, 19839 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller Automated Transmission, 12350 lb Front Axle, 40000 lb Rears, Air Ride Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 181 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks