johnfin

What are the differences between these water pumps. There are 3 a/c delco models called out for my car.

ac delco 252846 #19195105

ac delco 251744 #19256263

ac delco 251722

wssix99

iTrader: (5)

I don't know about the 846. You should NOT go with the 722. It is the original equipment for your car and was superseded by the 744. This thread links to a doc from 2010 that explains that substitution. (I recall that the 744 was upgraded for the GTO and GM decided to make it the replacement for the older LS engines.)

https://ls1tech.com/forums/general-m...ater-pump.html