WTB: Garmin 21 Radar dome 4000 series needed

WTB a Garmin 21 radar functional dome that is to replace current dome. The GMR 21 dome needs to be compatible with a 2006 Garmin GPSmap 4208 unit or 4000 series that is functional. Will pickup in Chs area if unit available. email or text 843 810 eighteen forty one

Allen
27 World Cat twin 225’s
13 dauntless