Whirlpool 4387489 is a defrost termination thermostat (model L70-58) that opens at 70°F and closes at 58°F to terminate refrigerator defrost cycles. It is designed to fit specific Whirlpool-manufactured refrigerator models and serves as a replacement for OEM part numbers including WP4387489. The unit is supplied as a single thermostat and functions as a temperature-activated switch to control defrost heater operation in refrigeration systems.
Opens at 70°F and closes at 58°F (L70-58) for defrost termination
Defrost termination thermostat; sold as a single temperature-activated switch; side push-on mounting clip
Designed to fit Whirlpool refrigerators; replaces WP4387489 and multiple OEM part numbers; cross reference SL2697