Unfortunately, this part has recently become no longer available.  The dealer is no longer carrying it and as there is no aftermarket for this part, I would say it is up to us to make some type of replacement fitting.  I had been getting these as recently as two months ago, however this abrupt discontinuation of parts is VWs way.  I would try to find a used one for the short term and then see if you can fabricate some type of replacement in the future.

Thanks,
Ken Wilford
John 3:16
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