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Your cart is empty.An ACDelco GM Original Equipment Engine Coolant Thermostat Kit comes with the thermostat and gasket you need to replace the thermostat in your vehicle, and is a GM-recommended replacement for your vehicle’s original component. The engine coolant thermostat controls the flow of coolant through the radiator to enable the engine to reach and maintain its normal operating temperature. This original equipment engine coolant thermostat kit has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Bigdaddy65
Reviewed in the United States on January 21, 2025
I bought this and one from napa in case the one from Amazon was a fake. The boxes were the same and looked identical. I returned the one to napa because it was almost 10 dollars more. I did buy a paper gasket at napa that was recommended and did not have any leaks. This was for a 2005 monte carlo ss with the 3.8l super charged engine. Amazon says this doesn't fit but it is the same part number napa recommended. Not sure why that is, but it works. Very cold out and now engine is running between 190 and 200 with a temperature rating of 195. Great!
paul greene
Reviewed in the United States on September 11, 2024
Perfect fit, great price and quality
Denny M
Reviewed in the United States on November 7, 2024
After using two aftermarket thermostats that lasted only a few weeks each. I couldn't take another day with the check engine light on. I replaced them with this factory thermostat and the light hasn't cake on since I installed this one!
Miechelle Davis
Reviewed in the United States on October 28, 2024
Works for a 2001 Buick park Avenue with 3.8 L engine. Has the gasket one vent hole that should be installed on the top.
Russman
Reviewed in the United States on October 28, 2024
Seal was correct and in mint condition
danny ramirez
Reviewed in the United States on August 6, 2023
Easy installation and working fine
Richard
Reviewed in the United States on July 3, 2023
Matches the OEM fits perfect I purchased a felpro gasket as recommended by a reviewer, not required, the one the comes with the thermostat fits fine. when installing make sure its aligned press around the edges its snug but goes in pretty easy. Just installed and tested no leaks works as expected.
J. Miller
Reviewed in the United States on November 20, 2023
Exactly what I needed for my 3800 series 3 engine. I was getting an intermittent thermostat code and really wanted to get this because it's supposed to be the highest quality option, I've heard plenty of legitimate horror stories on car forums and discussion groups about the consequences of running a cheap aftermarket thermostat on these engines and they also seem to have a short life span if you don't get a delco Stat.I've had this in for about one month and it's performance is flawless now with no code and my temperature gauge is always happily in the perfect center 50% between cold/hot where it used to be. When my thermostat was flaking out previously I would see my needle creep up occasionally to the 60% ish mark and later drop down to around 40% on the gauge.I haven't had a chance to pull the numerical coolant data from my scan tool yet but just seeing my coolant gauge be stable and consistent is very reassuring.
Dr.feras.aburub
Reviewed in the United Arab Emirates on October 24, 2022
Fits perfectly
isidro
Reviewed in Mexico on September 30, 2021
equipo original
Customer
Reviewed in Canada on December 8, 2019
Thermostat fit perfectly and works great.
Ig Kor
Reviewed in Canada on December 16, 2019
Keep temperature closer to optimal, still fluctuating temperature, but it's problem of fatal mistake in GM cooling system engineering ("downstream" position of thermostat).
Lulu8
Reviewed in Canada on May 19, 2018
I'll always use ACDelco from now on, the others don't compare to the better quality and performance difference I've seen in my vehicle using these products.
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