2007 Caterpillar D6R Crawler Dozer. SN CAT00D6RAGJB00920. Cab/Air. 128 SU Blade. Sweeps. 24 Inch Tracks. Diff Steer. Cat Diesel Engine. Rear Aux Hyd. Hour Meter Reads: 12,099 Hours. Per Seller: Rebuilt Motor. Receipts Available.