Product review (5 stars): Did The Job
I replaced the defrost thermostat in my refrigerator with this part along with a new defrost timer.  I really do not know for sure which old part was bad but the fridge works perfectly now.  This thermostat is a perfect replacement fit.  The only thing I would do different next time is to use my own shrink tubing since the ones provided with the thermostat are too rigid and do not shrink completely around the supplied crimp connectors, which could allow moisture into the connection. But I am happy with the product itself and especially the good price.