I have a 2003 A4 with Bose and have the Sirius Kenwood Here to Anywhere hard wired up to my car. I would like to purchase the OEM Sirius unit from clairparts but I don't know if it will work. Can anyone tell me if this will work or if it will require too much to make it worth it?

The Audi Collection and Accessories catalog has the Sat radio tuners listed for 2004-up only for the A4.

Does your radio have the SAT button to the lower left of the cassette slot as a source choice? If it does, it will work, if not, it won't.

I have 2004 A4 and a Sirius Sportster head unit. Anyone have the specs on the 8E0-057-593 so I can figure out a way to use my Sportster head unit with the factory antenna???