I just bought a new 2005 Audi A6 that had factory-installed XM satellite radio. I had the XM radio module removed, and replaced it with a Sirius satellite radio module. I now have the XM module and would like to sell it. It is essentially brand new. If you were to buy it from an Audi dealership, it would cost $533 for the part (according to the Audi USA website). I am told by the parts department at my Audi dealership that it can be placed into another Audi A4 or A6. I am asking $300, but will take the best reasonable offer.

 

I am intersted. Sent e-mail and pm.