The 79°C THERMOSTAT (IN HOSE) for the Citroen DS is a crucial component for regulating engine temperature. Integrated within the coolant hose, this thermostat opens and closes at 79 degrees Celsius, allowing coolant to flow through the engine and preventing overheating. Suitable for classic Citroen DS models, this part helps optimize engine performance and prolong engine life. It ensures quick warm-ups during cold starts and maintains a stable operating temperature during driving, essential for vehicle reliability and efficiency.