WP4387503 Whirlpool Refrigerator Defrost Thermostat

The Whirlpool WP4387503 Defrost Thermostat is a genuine OEM safety device that monitors evaporator coil temperature and triggers the defrost cycle when needed.

With a 48°F limit and convenient face-mounted clip, this bi-metal thermostat prevents excessive frost accumulation while protecting against overheating.

When frost builds up excessively, temperatures run too warm or cold in either compartment, or water leaks occur, a faulty thermostat is often responsible—this replacement restores proper defrost operation and temperature stability. 

Compatible with Whirlpool, KitchenAid, Maytag, Jenn-Air, Amana, Inglis, Magic Chef, and related brand refrigerators, this authentic component ensures reliable performance and system protection.

Part #: WP4387503