Short version
I have an upper thermostat housing on the way. Anyone happen to know what the thread should be? I assumed metric but someone told me they might be british standard. I'd like to use and aftermarket temp guage I bought that has standard and some metric adapters.
Long version
The reason I ask is because my original one had an aftermarket standard in it that wasn't working when I got the car. A friend of mine gave me one of his and actually put it in for me while I was doing something else, also standard. Well his didn't last long because I never secured it to anything so I was replacing it again the right way this time. At some point the thermostat housing cracked because I no longer have anything to thread into thus the replacement. Obviously I'd rather not do that again.