Thermostat has 1/4 inch terminals. The High Limit Thermostat is an OEM part for Whirlpool dishwashers. This safety feature is designed to prevent the dishwasher from overheating by shutting off the power if the internal temperature exceeds a certain limit. It acts as a safeguard against potential hazards, such as fires, and ensures the dishwasher operates within safe temperature ranges.  Over time, the high limit thermostat can become defective due to normal wear or electrical issues within the dishwasher. A malfunctioning thermostat may not accurately respond to temperature changes, which can lead to overheating or the dishwasher not reaching the necessary temperature for optimal cleaning. Symptoms of a bad High Limit Thermostat include: Dishwasher not starting or completing a cycle The dishwasher stops heating water, affecting cleaning performance Overheating, which could potentially damage dishes or the dishwasher itself This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.This part fixes the following symptomsNot drying dishes properlyPart Number WP661566 (AP6010246) replaces 661566, W10339474, 2887, 3369777, 3370783, 3371618, 4171694, PS11743423, WP661566VP.