One New Aftermarket Replacement Spacer Fits John Deere Crawler Dozer and LoaderThis aftermarket replacement spacer (T121002) is used in the rock guard assembly on Fits John Deere G-Series and H-Series crawler dozers. It is a hardware component that spaces and secures the rock guard panels along the undercarriage. The serial number restriction applies to 650H units built before serial number 925918 -- verify your serial number before ordering.Specifications Weight: 1.50 lbs Application: Rock guard mounting assembly Serial Number Restriction: Fits John Deere 650H -- applies to units built TO serial number 925918 only Compatible ModelsFits John Deere G-Series / H-Series Crawler Dozers and Loaders: 555G, 605C, 605K, 650G, 650H (to Sn# 925918), 650J, 650K, 650 PReplaces Part Number(s):T121002New aftermarket replacement part - not remanufactured, not used.