Genuine OEM Volkswagen Temperature Sensor, part number 0EA906072D. This sensor accurately measures the engine's coolant temperature, transmitting vital information to the engine control unit (ECU). The ECU uses this data to optimize fuel injection, ignition timing, and cooling fan operation, ensuring efficient performance and preventing overheating. Genuine OEM sensors are manufactured to exact specifications for reliable and precise readings, which is critical for engine health and fuel economy.