On the driverside of the engine, there is a threaded opening where my old temp sensor was installed, i think its 5/8". But i am not sure. The new sensor would be 1/8" so thats to small too fit in that opening.

I want to be sure about the size so i buy the right adapter. I'd like to use the same opening as usual.


Chevrolet 3100
Year: 1951
engine: inline 6 217CI
Transmission: Manual 3-Speed.
12Volt.