This is the antenna needed for the Garmin Zumo 665 GPS. This antenna enables the XM radio portion of the 665 to operate properly. The GXM40 Antenna was discontinued several years ago by Garmin and they are difficult to find. I have an extra and thought someone might have use for it. An Ebay search shows these antennas run from a low of 95 to 159 dollars. I'm asking $105.00 shipped to CONUS by USPS Priority Mail.
I have attached a photo of a GMX40, its not the antenna you'll be receiving but looks just like. Please don't hesitate to contact me with questions either by PM or 859-393-6675.