Cummins ISX 6 11.9L Ultra Low Sulfur Diesel 425 hp Engine, 2016 US EPA Label, Requires Diesel Exhaust Fluid, Positive Air Shutoff, 6427 Engine hrs, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller FRO-16210C 10-Speed Manual Transmission, Double Differential Locks, 20000 lb Front Axle, 44000 lb Rears, 4.63:1 Axle Ratio, 64000 lb GVWR, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Dual Steering Boxes, Air Ride Suspension, 243 in Wheelbase, Dual PTO, Double Frame, Headache Rack, Air Sliding 5th Wheel