Genuine OEM Audi Oxygen Sensor, part number 06J906262M. This sensor plays a critical role in engine management by precisely measuring the oxygen content in the exhaust gas, allowing the engine control unit to adjust the air-fuel mixture for optimal combustion and reduced emissions. It is typically installed in the front section of the exhaust system. Weighing approximately 0.168 kg, this sensor is a direct replacement. Choosing a genuine OEM oxygen sensor ensures accurate signal characteristics and long-term reliability, preventing false readings that can lead to poor fuel economy or catalytic converter damage.