The CAT 3E-5465J Switch Assembly Thermostat is a replacement part specifically designed for Caterpillar heavy equipment. This product is new old stock, meaning it is no longer in production but is still available for purchase. It is a genuine CAT brand component, ensuring compatibility and quality for Caterpillar equipment. This switch assembly thermostat is a critical component for maintaining and repairing heavy machinery, making it a valuable asset for businesses and individuals working with Caterpillar equipment.