The Delphi Vehicle Tape adapter works with the majority of XM Radio Receivers, simply insert the Tape into your car Cassette player, and plug it into the line out on your receiver. With this adapter there is no need for an FM modulator or aux cable. This adapter is compatible will SIRIUS & XM Satellite Radio receivers as well iPods and other MP3 players. This is the same cassette adapter that is listed in the SIRIUS XM Radio Accessory Guide model: XMTTZ00257