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Your cart is empty.The fastest, easiest way to know exactly when it's safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
Steve S. Morris
August 28, 2025
I'll be the first to say that I LOVE new gadgets for my truck and this really caught my eye. I was a little skeptical at first, but after seeing that the temperature reads very accurately and the cap fits perfectly, I am 100% sold on the Mr. Gasket ThermoCap!!! It's anodized finish looks great too!
Brad Tyrrell
July 31, 2025
Good idea failure as a product. Doesn't fit like I hear over and over about this Temp. Cap.so cheaply made even if it did fit I think it would get broken in a few months.Not even sending it back. Why waste more time, money and energy on it. Chucked it.
Marcus Gordon
July 20, 2025
Works great. Will buy for my other classic Mustang
Dan Austin
June 4, 2025
Functional and looks good.
Richard Owens
April 4, 2025
Put it on a 94 mustang 5.0L added a nice look to the red hoses I have on engine
Customer
April 3, 2025
As the headline says, it simply does not fit as advertised/amazon's check fit indicates. Tried to put it on a 2004 Ram 2500 5.7L Hemi, would not engage radiator cap tabs. Neat idea, but I expected a Mr. Gasket product to at least fit properly.
Bbl
December 28, 2024
With some minor bending of the 2 lips, fitted perfectly on my '77 corvette radiatorTemp is accurate (checked it with a laserthermometer)
Wizbang72
December 27, 2024
I do like it, but it did not fit right out of the box. I had to bend the thread tabs out, and replace the gasket with the thinner factory gasket to get it to go on and seal.***UPDATE*** 11.20.2020 Taken out of service sometime around July 2020. The upper gasket that seats on the top of the radiator neck started to look shredded, and was beginning to come apart. It didn't fit right from the beginning, and lasted only about 3yrs whereas I have used still functional factory caps that were 40+ years old. It was a cheap and easy way to add a temp gauge under the hood, but I will not buy again. I added a pair of Auto Meter gauges to the firewall for temp and oil pressure.
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