The Whirlpool T-O-D Z2134 Thermistor is a key component for regulating the defrost cycle in your refrigerator. Designed to precisely monitor the evaporator temperature, this thermistor ensures the system initiates and ends defrost cycles efficiently, preventing frost buildup and maintaining optimal cooling performance. As an OEM replacement part, it's built for compatibility, durability, and long-lasting operation. Key Features ? OEM Replacement ? Direct replacement part for Whirlpool and compatible refrigerators ? Accurate Sensing ? Monitors evaporator temperature to regulate defrost cycles ? Restores Efficiency ? Prevents frost buildup and ensures proper cooling ? High Compatibility ? Fits a wide range of top-freezer and side-by-side models ? Easy Installation ? Quick and straightforward replacement process Specifications ? Part Number: T-O-D Z2134 ? Type: Thermistor (Defrost) ? Voltage: Low voltage sensor, integrated with defrost circuit ? Function: Temperature sensing for defrost system ? Application: Evaporator coil area ? OEM Part: Yes (Whirlpool original part) Compatible Models Fits popular models including: WRS325SDHZ00, WRS311SDHM00, WRT549SZDM01, WRT518SZFM00, WRT311FZDM01, WRS315SDHZ04, WRS555SIHZ03, WZF34X18DW04, ART318FFDW03, WRS331SDHM02, MFW2055FRZ00 (and many more) Why Choose This Item Restore the proper function of your refrigerator with the Whirlpool T-O-D Z2134 Thermistor. Whether you're replacing a faulty sensor or performing preventative maintenance, this thermistor ensures your fridge stays frost-free and energy efficient. Backed by Whirlpool?s quality, it's a reliable solution for long-term performance.