Cat C15 500 hp Engine, 28264 Engine hrs, Engine Brake, Eaton Fuller 18-Speed Transmission, Differential Lock, 46000 lb Rears, 295/80R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 4400 mm Wheelbase, PTO, Hydraulic System, Ballrace 5th Wheel, Auto Lube, GVM 26.5 t, GCM 90 t