Coolant Temperature Sensor Connector

most every other application uses #8 studs on senders. Chrysler is the oddball with their #10 studs on senders. #10 is very close to 3/16 (.1875).
If you want OEM type with the weather boot, go to a parts yard. Coolant sender, fuel sender are the same, and possibly the brake warning sender on proportion valve.
If you only care about the fitment and not the weather boot, the noise suppression capasitior on the back of those instrument panels that have the mechanical voltage limiter inside the 3 post fuel gauge, its connector fits the #10 post too. I purchased a quantity of these from a member here who had several used rally instrument panels, just for their connectors.