Just found this forum and could use some help finding the correct oil filter for the 2005 JD 500. I ordered the filters previously from a John Deere parts (C420956741) I'm down to my last filter and JD says no longer available. Rotax RB-x347 is stamped on the filter, but I can't find that online either. I know this an old machine but I use it for all kind of things on the ranch. I see a KN filter but the one end doesn't match the current filter design. Thanks in advance.