Hi
Had problem with my 95 a8 fuel pump got a shock when Audi wanted
£500 for a new one after messing about for a couple of weeks trying to get one on the cheap
found out that if you take the big fuel pump assembly apart you find the pump inside with a part no got one from bosch for.........£150

 

the prob here in the colonies is finding someone who will sell JUST the pump, not the entire ($800.00) assembly