Stripped thermostat bolt

[budndawn]

left hand drill bit and extractor then rethread

[latravcha]

Originally Posted by budndawn

left hand drill bit and extractor then rethread

If the bolt broke that may work. I don't think you need a left hand drill bit though.

If the threads on the bolt stripped try using the tap that is the same size and thread as the original bolt to clean the threads in the hole out. If this does not work you could try and re thread the hole with a courser tap.