Cat Challenger MT855B Track Tractor, 4,546 Hrs Showing, 460 Hp, 15.2L 6 Cyl Turbo Diesel Engine, 16 Speed PowerShift Transmission, 4 Remotes, 32-100lb Front Weights, 12-Rear Weights, 30" Tracks, Swinging Drawbar, CaseIH/Trimble FM-750 Monitor, Foot Pedal, NavController 3, Spare Rebuilt Alternator Included, EZ Guide 250, EZ Steer, SN: AGCC0855ANTJG1145