Material: The thermostat shell is made of aluminum, which is lightweight, not easy to deform, and is durable。 Installation steps: Directly replace the damaged car thermostat housing assembly to improve driving safety performance。 Thermostat Housing YU3Z8A586AA 902-204 For Explorer 1997-2001 Features: The car thermostat effectively controls engine temperature. It accurately senses temperature changes and adjusts coolant flow accordingly. This precise regulation helps maintain the engine within the operating temperature range, preventing overheating or overheating. Function: This thermostat is constructed of plastic and metal to withstand the demands of everyday use.