ACDelco Gold 252-846 (19195105) Engine Water Pump

Fit my 1999 Pontiac Firebird Formula 5.7L LS1 perfectly. Bought this water pump in December 2022 and installed it right away. It's now November 2025 (about 3 years later). Had no issue with the install. Fits well. Seals well. I've driven my car about 10K miles total over the past few years. No issues. No leaks. Happy so far. I live in the greater phoenix area where we don't have much corrosion from salt, water or humidity.

Got the ACDelco Gold 252-846 engine water pump for my car last month. Finally installed it this weekend, and I'm happy with how it's performing. It was a breeze to set up, even for someone like me who's not very car-savvy. I was actually procrastinating on some work when I decided to write this review. So far, so good - the pump seems to be working well and keeping my engine cool. Definitely a good buy for car maintenance!

The ACDelco Professional 252-846 Engine Water Pump is a top-notch replacement part for my vehicle. Installation was a breeze, and the pump fits perfectly without any issues. Since installing it, my engine has been running cooler, and I haven’t experienced any overheating problems. The quality of the materials is impressive, and the pump seems durable, handling the engine's cooling system with ease. It operates quietly and efficiently, and I feel confident in its longevity. Overall, I highly recommend this water pump for anyone looking for a reliable and high-performance replacement part.

Nice OEM pump delivered quickly at a good price. Install was without drama and it works perfect. If your serpentine belt is rather new and you don't need to replace it, be sure to remove it completely from the car......if you get coolant on the belt it will squeak and then you will have to replace it.

So I bought this for my 2005 CTS-V, recently bc I was suffering through coolant leaks and the water pump seemed to be the source of it, not to mention it had a lot of miles on it. Just gonna say this, it works. All the hose fittings, bolts, gaskets, everything fits. However, the only issue is that it's going to be an EXTREMELY tight fit, and it's all because of the pulley. The pulley on this one is extraordinarily thicker than the original one that came from the V, so expect to cut a bit of the rear fan cover off. Apart from that, it works perfectly, haven't had any leaks and the coolant's staying cool for LS6 standards. Only giving this 4 stars from a CTS-V owner just because of that huge pulley. If it were slimmer, would have given it 5 :)

Feels like quality, shipped in a tough box. No shipping damage and the gaskets were perfect. Fit my 2000 corvette and worked with no leaks out of the box.

Easy install, works perfectly.

The ACDelco Professional 252-846 Engine Water Pump does its job, but I’m not entirely convinced it's the best option out there. The installation was straightforward, and the pump seems to be running well for the time being. It’s also a genuine part, so I feel confident that it’s the correct fit for my vehicle. However, after using it for a few months, I’ve noticed a slight increase in engine temperature during heavy use. The pump seems to be working fine under normal conditions, but I’m not sure how it’ll hold up in the long run, especially with more demanding situations. The build quality feels good, and the pump is quiet compared to some cheaper alternatives. Still, it’s hard to tell if it’ll stand the test of time. If you're on a budget, this might be a good choice, but I’ll be keeping an eye on it over the next few months to see if any issues pop up. Overall, it’s decent for the price, but I wouldn’t say it’s outstanding.