Genuine OEM Audi Lambda Probe, part number 022906262BM. This sensor is a critical component in the exhaust system, responsible for measuring the oxygen content in the exhaust gases. Its readings are sent to the engine control unit (ECU) to optimize the air-fuel mixture for efficient combustion and reduced emissions. Weighing 0.175 kg, a genuine OEM lambda probe ensures precise calibration and signal characteristics, which are vital for accurate engine performance and emissions compliance.