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。 1338068 92062728 For Isuzu Engine Coolant Thermostat Housing Assembly Features: Our thermostat housings are constructed from a plastic material that can withstand harsh conditions. Function: This thermostat prevents overheating and maintains the engine at an operating temperature extending vehicle and reliability.