I'm not due for a timing belt/waterpump change for a while but I was wondering Does anybody know who manufactured the original water pump for the 2005 TL?

 

i believe its AISIN. i just had all of mine replaced and they used that one, or there is another brand that i cant think of they may use. Sorry

 

if the car is making a squeeling noise, is that the water pump?

 

If a sqeaking could be the serpentine belt itself, but if truely a sqealing sound, could be many items. Does it do it all the time? Only under certain conditions? If all the time, check belt tightness, then remove the serpentine belt and check the tensioner for noise, if OK start the car for only a few moments and see if the noise dissapears. If no noise, start checking each accessory, but if the noise is present something inside, water pump, timimg belt tensioner.