
I used a 12.5 to 1/4β NPT fitting to attach the temp sensor to the back of my motor. I rebuild engines and understand torque and don't over tighten. I used to fit dozens of brass fittings into blocks with no problem. These were by far the cheapest badly made ones I've ever dealt with. He took the little thing out with one finger, and when the key was turned 30 degrees, he gave way and cut the thread. Unacceptable quality.

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