OEM sensor threads
 

Could anyone confirmt he thread of the following please?
Water temperature sensor in the rear iron (dash gauge).
Oil pressure sender in rear iron.

I think they're both 1/8, but not sure if they're NPT, BSP, or BSPT.
Ta!
Si

You are correct, water temp sensor for the gauge and the oil pressure sensore are placed, easy said, under the intake elbow ( on the engine of course ).

They are not imperial threads.

they are BSPT pretty sure. I couldn't get npt to seal. Had to use bspt to get it to seal.