The MOTORAD Thermostat w Housing 538-187 is a high-quality engine coolant thermostat housing assembly designed for car and truck parts. Made of durable materials such as aluminum, stainless steel, and copper, this thermostat housing ensures reliable performance. With an opening temperature of 187 degrees, it effectively regulates the engine coolant to maintain optimal temperature levels for improved engine efficiency and longevity. Trust the MotoRad brand to provide top-notch automotive components for your vehicle's engine cooling system.