Cummins ISX 6 Cylinder 15 L Ultra Low Sulfur Diesel 485 hp Engine, 2008 US EPA Label, 11393 Engine hrs, Engine Brake, Eaton Fuller RTLO-18918B 18-Speed Manual Transmission, Double Differential Locks, Dana D46-170HP Drive Axles, 4.30:1 Axle Ratio, 50320.0 lb GVWR, Air Ride Cab, Aluminum Wheels, 425/65R22.5 Front Tires, 11R24.5 Rear Tires, Double Frame, Neway Air Ride Suspension, 250 in Wheelbase, 175 in Cab to Axle, 275 in Cab to End of Frame