Your in luck. I broke mine about three months ago, took me ages to find one.
http://www.vwbusshop.de/
click on westy T3, then wasser?????,hey presto 26 euros.
It was about £26.00 delivered to the UK. Took a while mind you but hey. Its hard to get any fawcet for a camper for that price, let alone the original........
Removal...........
Three screws on the top of the fawcet ring, Need a stumpy screwdriver or remove the cooker hood (buy a new screwdriver).
The pipe attachment (which has a 90 degree bend) is glued to the pipe, and will probably break . This has been modified for the best on the replacement model. Other than that two electrical connectors.
lhd.............................