I think it is worth a try, at least here in the states. They work on so many different applications that they usually have a large selection. I would do a search on your area and check it out, especially with the price of a new one, ouch!The fitting won't be found easily or at all. It likely is installed into the pump while it is being assembled for VW by another company. So VW doesn't even have a part number for it.
If you can find one, a used pump would likely be just as good. Just make sure it wasn't sitting dry, as I believe the pump uses the fluid for lubrication and if left to dry out would likely cause it to have issues.