New, never installed, OEM John Deere Back Up Ring. This is a true John Deere part and not a cheap aftermarket or knock off. According to John Deere this is used on quite a few years, models, and equipment types. As with any part, please verify this will fit your exact year, sub model, and serial number before ordering. I am not responsible if this does not fit for you and it will still be yours. The John Deere part number is R41057. Absolutely No Returns/No Refunds/No Excuses. Thanks for looking. These will not ship in original packaging as they are normally sold five to a pack but I am selling them individually.