F**K YOU TAIWANESE/CHINESE MADE JUNK

Look at the reviews for the made in the US Milodon thermostat that costs twice as much. Same issue.

You want to blame summit, but you bought a ten dollar thermostat housing.

And, what makes you think the thermostat is the right size?
I don't know if I can get anything that is right anymore for any car that I work on. I see made in Germany, Japan or USA printed on the item in the photo and what get is made in low quality land China or something. I've even sent parts back to the autoparts store because they did not meet my quality standards. Hell, when I regularly worked on cars as a mechanic, some new brake pad sets were grind to fit, and yes, the brackets were cleaned. It was hit and miss fitment and quality issues.