but the newer round ones, I ordered one for a colleague, there was an aluminium 3 screw plate fabricated and the modern thermostat switch screwed in.
We didn't order at the factory, we paid 140 CHF for it, don't know if the factory also provides it and how much it would cost.
If somebody is interested, I found Jaguar Thermo-Switch is identical, and
works great. The core (Sensor) can actually be replaced with several common sensors for little money. (Toyota GM etc).
My sensor keeps the CT running at 80 degrees.
I have details if interested!