This MAHLE thermostat, part number TI 136 84, is designed to precisely control the engine's operating temperature. By regulating the flow of coolant through the radiator, it ensures the engine reaches and maintains its ideal thermal range quickly after startup. Proper temperature regulation is crucial for several reasons. It allows the engine to reach peak efficiency, which directly impacts fuel consumption and reduces emissions. A malfunctioning thermostat can lead to either overheating or an engine running too cold, both of which can cause significant damage and poor performance. MAHLE is a trusted name in engine components, known for their quality and reliability. This thermostat is built to meet stringent manufacturing standards, providing a dependable solution for your vehicle's cooling system. Installation ensures that your engine operates within its designed parameters, contributing to its longevity and smooth operation.