I had a complete timing belt set, water pump and crank shaft seal replaced at VW main dealers with genuine parts and the water pump failed the day after! QUOTE]
So much for quality genuine VW parts. We all need to accept the facts that all new parts are without faults & that I would not keep putting new water pumps in at every belt change if they check out OK. I will change mine at the next change or before if it fails but by then it will have done 150,000km.