Flex-a-lite (32180) 180 Degree Thermostat Thermostat opens at lower temperatures, allowing systems to run cooler with Flex-a-lite electric fans and Flex-a-fit aluminum radiators Features a unique V-notch valve that reduces cycling time by metering the amount of coolant flow Uses a high-flow venturi for maximum cooling capacity during high-temperature, high-load operation Thicker than most competitor thermostats and are made from stainless steel for added strength and longer life Made in the USA