2011 Komatsu D31EX-22 2011 Komatsu D31EX-22 16in Grousers Pat Dozer Assy Rops C Engine S/n 512454 Ripper Hydraulics 3-shank Ripper 2000hr Premier Ext Warranty Expires 12/29/13 Bulldozers Crawler Dozers 3883 PSN ... Click here for more information