[mitchelm]

The ebay auction says its for an A4, looks like it is for the b6 a4 but I am skeptical about it. here's the link:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7975155446&category=38653

 

[AudiA4B6US]

The 8H0 is the A4 Cabriolet, the 8H0 035 192 is its European RNS-E. The unit should fit in a A4 B6 just fine but I have not read anything about the 8H0, you are on your own trying it in a 8E/B6. However, I would guess it works just fine.