Quote: I think you are right in that a unheated O2 Sensor will corrode.
Millions of cars made from early 80's to 86' from Mopar without heated O2, I would not lose too much sleep over it. I have a three wire heated unit in my GTX that has seen duty since 1992 or 1993 when I first installed it. Still works just as fast as the day it was installed.
