This FEBI BILSTEIN thermostat (part code 106075) is designed to maintain your engine's ideal operating temperature. By precisely controlling the flow of coolant through the radiator, it prevents overheating and ensures the engine performs efficiently. A properly functioning thermostat is crucial for fuel economy and reducing emissions. When the engine is cold, the thermostat remains closed, allowing the engine to reach its optimal operating temperature faster. Once the desired temperature is reached, it opens to allow coolant circulation, preventing the engine from overheating. FEBI BILSTEIN is known for its commitment to quality and precision engineering. This thermostat is manufactured to meet stringent standards, ensuring reliable performance and longevity. Replacing a faulty thermostat can prevent serious engine damage and restore optimal performance.