This MAHLE thermostat, part code TM 6 109, is designed to maintain your engine's ideal operating temperature. By precisely controlling the flow of coolant, it prevents overheating and ensures efficient engine function. A properly functioning thermostat is crucial for consistent engine performance and optimal fuel consumption. It opens and closes to allow coolant to circulate through the radiator as needed, keeping the engine within its designed temperature range. MAHLE is a trusted name in engine components, known for quality and reliability. This thermostat is built to meet stringent standards, providing dependable service for your vehicle's cooling system.