Genuine OEM Volkswagen Lambda Oxygen Sensor, part number 04E906262FB. This sensor is a crucial component in the exhaust system, continuously monitoring the oxygen content in the exhaust gases. It provides real-time feedback to the engine control unit (ECU), enabling precise adjustments to the air-fuel mixture for optimal combustion, fuel efficiency, and reduced harmful emissions. Weighs 0.15 kg and measures 0.16m in length. Using a genuine OEM sensor ensures accurate readings and correct calibration, which is essential for maintaining engine performance and meeting emissions standards.