John Deere-style premium aftermarket tooth retainer or locking component. Part reference 23PN. Size/application: 23 Series Retainer. Matching tooth-system size: 23 SERIES. Matching pin reference depends on the installed system generation and is not separately identified in this catalog. Secures the replaceable tooth, protector or ripper component to its matching adapter. Brand compatibility: John Deere and premium aftermarket systems built to the matching John Deere specification. This hardware fits only the specified system and matching dimensions.