I need to replace my water pump. Usually I go to Autozone and buy their lifetime warranty parts, and let them replace them for me when they go bad. We have a new O'Reilly's so I have other options. I don't think Autozone parts last as long as OEM parts do but a new AC Delco water pump is $110.00 with a 1 year warranty vs a new Duralast or a Master Parts Division with a Lifetime warranty for 30.00 or less. Is the AC Delco even as good as what came on our trucks originally? I had an opportunity to compare an AC Delco starter to an Autozone lifetime warranty starter an the AC Delco was beefier by far. Could there be that much difference in water pumps also? Dependability is really important to me because although this doesn't have to be my daily driver, our annual trip to Oklahoma is on a pretty tight schedule and I don't want to break down.