T121002 spacer Fits John Deere 650G, 650H s/n -925918One New Aftermarket Replacement Rock Guard Spacer Fits John Deere Crawler Dozers and Loaders This spacer is used as part of the rock guard mounting system on the undercarriage of Fits John Deere crawler dozers and crawler loaders. Rock guard spacers work in conjunction with the guard panels and mounting bolts to properly position and secure the side rock guards that protect the track frame and bottom rollers from debris damage. This part weighs