i have a jetta and would like to know how difficult it would be to do. I know its a german car this is why i ask. thanks
Looks like you're covered with the mechanical aspect of your question! My input involves your comment on its a german car. I have several friends that are mechanics/techs. To a man, they say it doesnt matter what make (Japanese, American,European,Korean,etc.) the manufacturer assembles each for its ease of assembly at the factory. Ease of repair is a secondary consideration. All you have to do is look at their skinned knuckles as proof ! They all well deserve their paychecks!
The water pump is driven by the timing belt on that engine. You don't have to take the alternator, power steering pump, or the a/c compressor off, but you do have to make sure it is timed right. Not too hard to do, just make sure the marks line up. Good luck!
