The Mahle Thermostat Assembly - TM12105 is a high-quality automotive part designed for regulating the temperature of an engine. It is made by the reputable brand Mahle and is designed to fit a variety of vehicle makes and models. This thermostat assembly is responsible for opening and closing the flow of coolant in the engine, ensuring that it stays at the optimal temperature for efficient operation. It is a durable and reliable product that is essential for maintaining the health and performance of an engine.