I tried my Defi BF Oil Temp Sensor with the Greddy Block Adapter and the Greddy Relocation Kit, and neither matched the threads on the Oil Temp Sensor......I guess I will try the Drain Plug now, but I need to know the size of the plug (M & Thread) so I can get a sensor adapter.....Anyone?? Is it M12 x 1.25?

 

bump.....

 

good question, did you find out? It's M14-1.5, right?

 

Have you considered drilling and tapping one of the Banjo bolts in the oil lines, the filter inlet is one for example.

 

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/thread-size-oil-drain-plug-322013/