they are now selling adaptors for heater and radiator hoses as well as metric adaptors, right angles, etc... must be a pretty recent thing .

Should make using aftermarket gauges of all types easier.



adaptor listings

metric adaptors

hose adaptors

 

Is BSPT the code for british pipe thread? For some reason the water temp guage hole in my rear plate is machined for british pipe thread.

 

british standard pipe thread