[s-cars] Air Conditioning Compressor -- help

[Kevin Day]

I bought a new compressor on ebay recently, and it arrived today.  I
think it's the wrong part, but the seller insists it will fit anyway.
(Expletives deleted)  The original part is a Zexel DCW-17B.  I received
an Omega DCW-17D.  The seller tells me that Omega is a name that Zexel
uses on non-OEM parts.  I can't prove or disprove that, though it seems
suspicious.

The cross-references I see on the web indicate that the DCW-17D is used
on an Audi TD and a few Golfs, but that the 2.2 (and 2.8) use the
DCW-17B.  Does anyone know otherwise?  

I *really* don't want to bring this to a shop and have it not fit.

Thanks for any help... 

-Kevin