Genuine OEM BMW exhaust gas temperature sensor, part number 13629488336. This sensor is installed in the exhaust system to measure the temperature of the exhaust gases. This data is vital for the engine control unit (ECU) to optimize fuel injection, ignition timing, and emissions control systems, ensuring efficient operation and compliance. Genuine OEM sensors are calibrated to precise specifications, guaranteeing accurate temperature readings essential for maintaining engine performance and reducing harmful emissions.