Hi mate, I don't know the VW part no but the one you mention on euro car parts is the one you need. It sounds a bit dear to me tho. I'm sure I paid about £20-£25. You will be able to pick one up from a good local motor factors. They're not as hard to get hold of as you might think. I got offered a full pump or a cheaper part which is actually half the pump (the bit that gets knackered). I'd go for the full pump as its alot easier to fit, it just bolts to the block (you don't need a gasket). The cheaper option involves splitting the pump and fitting the new half which is a lot of messing about for the sake of a few quid. Easiest way to do it is to remove drivers side headlight and remove charger then it's right in front of you. Hope this helps.