The Thermistor is an OEM replacement part for GE dryers. This temperature-sensing device monitors air exhaust temperatures and communicates real-time readings to the control board. Precise thermistor functioning ensures the heating elements and drum engage safely and appropriately. Symptoms of a faulty thermistor include: Slow or inconsistent drying times    Excessive heat inside the dryer chamber Overheating indicator lights illuminated  Potential shut-offs due to high-limit temperature triggers Causes often relate to moisture exposure from normal operation degrading electronic performance over time. Physical stress or impact could potentially damage thin connecting wires.  This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore dryers.Part Number WE04X20685 (AP5985030) replaces WE4M336, 4369857, PS11721518.