I am having a timing belt kit fitted in a couple of weeks,is it advisable to replace the water pump at the same time? If yes where can i get a good deal on a pump?
MY car -04 wrx 50,000 miles

 

If you're having no coolant temp issues whatsoever, then prob not required (car's only 4/5 years old, after all).

If you want to do it (for peace of mind) then GGR do new remanufactured ones for only £36.95 inc.VAT!:-

Subaru Parts at Graham Goode Racing

I bought one and fitted it (along with an uprated 71deg Zero Sports stat) - and my higher-then-normal temps came right down (although my old pump seemed perfecrtly fine - it was the slow-opening original stat that was the problem).

ADVICE: They come with an inadequate paper(!) flange gasket which isn't suitable - get a metal one from the likes of Zen . Oh, and for only a few quid more, you may as well fit a new stat as well - as it bolts on the front of the pump anyway!

 

no cooling issues i just thought it might be easier to do with the belt change.

 

Yes it is!

When the belt's off etc. it's easy to get to - so if you really wanted to do it. then the cambelt change IS the time to do it.

It cost me £228.28 of Zen's labour (at a typical labour rate of c.£53/hour) to fit the pump - includes extra coolant, metal gasket and sundries. So you'd need to add the cambelt price (plus idlers/tensioners/their extra labour) to that price (if not doing it yourself, obviously).