Genuine OEM Audi Lambda Probe, part number 06G906262F. This sensor measures oxygen levels in the exhaust gas, providing critical data to the engine control unit for fuel mixture adjustments and emissions regulation. It is positioned in the front section of the exhaust system, typically before the catalytic converter. Weighing approximately 0.21 kg, this sensor is built for durability. Choosing a genuine OEM lambda probe ensures precise calibration and signal characteristics, which are vital for maintaining engine performance, fuel economy, and compliance with emission standards.