I am in a quest to troubleshoot an oil temp that has crept up a bit in the
last 100 hours or so. Checked all the baffling and"usual stuff". I was going
to check the accuracy of the gauge via testing.

2 things that I cannot find: the part number of the oil temp sending unit
and a supplier. This part does not appear either in the engine parts list or
the airplane parts list. Engine is a 150hp E-3D.

Any info would be appreciated.
Thanks,

Mike