Rad Fan Thermo Switch

[Bernie Benz]

Can anyone find the Audi P/N for the subject switch, which mounts on the rad
end tank below the coolent outlet nipple.  Better yet, the Bosch P/N if it
is Bosch, as I have a good friend running a Volvo parts warehouse close by
who stocks much Bosch stuff.  The second stage side of this sw is out, so my
temp fix was to short out the AC high press switch leads (easy access), thus
forcing the rad fan second stage to run all the time when ign is on, rather
than not at all in this summer heat.

Thanks,  Bernie