Genuine OEM Volkswagen Lambda Oxygen Sensor, part number 05E906262N. This critical sensor is installed in the exhaust system, where it precisely measures the oxygen content in the exhaust gases. Its readings are essential for the engine control unit (ECU) to adjust the air-fuel mixture, ensuring optimal combustion, fuel efficiency, and reduced emissions. Weighing approximately 0.1223 kg, this sensor is built to deliver accurate and consistent data. Using a genuine OEM oxygen sensor guarantees correct signal characteristics and calibration, which is vital for maintaining engine performance, fuel economy, and compliance with emissions standards.