Cummins ISX15 15 L Ultra Low Sulfur Diesel 600 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 17707.6 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller rtlo18918b 18-Speed Manual Transmission, Triple Differential Locks, 13200 lb Front Axle, 46000 lb Rears, Dana D46-170 Drive Axles, 3.91:1 Axle Ratio, 59200 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R24.5 Front Tires, 11R24.5 Rear Tires, 8-Bag Air Ride Suspension, 232 in Wheelbase, PTO, Wet Kit, Headache Rack, Dual Fuel Tanks