ACDelco 252 845 Professional Water Pump: Optimal Performance & Durability Review

Lasted 6 months 4000 miles made in China the only thing that differed from the other two I replaced on previous trucks, one had 60,000 miles there for years but it was made in China manufactured Mexico or Canada. This one started leaking after a few months, I thought maybe it wasn't sealing well or something, but no, it was leaking around a loose shaft. So I went to Oreilys and got a lifetime guarantee so buy with caution unless you like swapping parts for fun! Not me……

Exact replacement, I bought the good used version read the description. Slight damage was claimed on the sides, which was. The casting had a dent in one of the top mounted holes that I couldn't get a bolt into. Using a grinder, I cleaned the hole with a router and everything was fine. The only issue I had was that the gaskets that came with the thermostat housing didn't have a gasket that went around the thermostat itself. Worked well and rotated with no leaks, I'm looking forward to a…

This pump is complete and has all the necessary parts. Sitting on a table, he is a beautiful sculpture; Bought this, thermostat kit and bolt kit. My Denali is 14 years old and this is an original factory pump that failed. Of the 6 bolts, 5 were in various stages of seizing and extraction was difficult. One bolt had sheared off, one had a round head and it took an hour to get it out with a vise - it was of course the hardest to get to. With a set of screws and anti-seize cream they fitted…

Replacing the water pump on my truck was probably the easiest and most enjoyable repair I've ever done. This pump repair is accurate, looks good and came with all the gaskets I needed and instructions detailed enough for anyone to use. Turns out the only thing that needed replacing was the thermostat to stop the leak, but if you're venturing into disassembly to fix it, replacing the water pump is relatively inexpensive and (for me) over 150,000 miles probably a wise decision. If you need a…

Failed. Shaft leakage after 8 months. Yes, at the same time I replaced the belt, tensioner pulley and fan clutch. I was trying to find a way to return it as I needed to buy it from O'Reilly quickly. Very disappointed that Delco's AC part failed so quickly. There is no way to go back to my previous orders. AC Delco will replace it, but I need to take it to the dealer and 'diagnose' it. Then they do the $$$ job. Ridiculous. What's the point of doing it yourself if you have to go to the dealer to…

After much research I decided to purchase an OEM water pump when mine failed. It looks like you are buying an OEM AC DELCO water pump. When mine arrived it was packed in 2 boxes with a "Genuine AC DELCO" hologram sticker on the outside of the 2nd box. Upon further inspection, the part number on the water pump itself was not even close to being found. The sticker on the water pump read the numbers 18-1652 and no other numbers or markings. When I checked, the Eastern Industries part number turned

Does not come with matching thermostat gasket. There were 2 thermostat gaskets and none were correct. Thank goodness my old gasket was fine and I reused it which saved me time and money at the parts store. GM has only made 10 million 5.3L engines with the same water pump and thermostat housing, you'd think it would work with the right thermostat gasket. That issue aside, it arrived in a large random (non-GMO) box that looked like it was doped 12 blocks behind a UPS truck, no peanut wrapper, no…

There are other water pumps that will 'fit' but none will fit as well as this one which is made to original AC Delco specifications. Once you've gotten over all the typical, unexpected headaches associated with crawling into the engine bay to replace such a part, the repair is actually quite simple. Aside from any unforeseen headaches, even a novice technician could probably do this in about an hour without flushing the system or any other preparations you might want to do before actually…