Genuine OEM Volkswagen Exhaust Oxygen Sensor, part number 04L906262J. This critical sensor continuously monitors the oxygen content in the exhaust gas, sending data to the engine control unit to optimize the air-fuel mixture. It is typically installed in the exhaust system, either before or after the catalytic converter. This sensor is designed for precise electrical signal output. Using a genuine OEM oxygen sensor ensures accurate readings, proper engine management, and compliance with emissions regulations, preventing potential engine damage and costly repairs.