Genuine OEM Audi Lambda Oxygen Sensor, part number 04E906262BD. This sensor measures the oxygen content in the exhaust gas, providing critical data to the engine control unit for fuel mixture adjustments. It is typically installed in the exhaust system. Weighing approximately 0.142 kg, it features a robust construction. Genuine OEM oxygen sensors provide precise and consistent readings, essential for maintaining optimal engine performance, fuel efficiency, and emissions compliance.