Genuine OEM Volkswagen Lambda Sensor, part number 06K906262AG. This sensor measures the oxygen content in the exhaust gases, providing crucial data to the engine control unit for optimizing fuel combustion and minimizing emissions. It is typically located in the exhaust system before or after the catalytic converter. The sensor has a length of 0.11 meters and a width of 0.05 meters. Genuine OEM lambda sensors are precisely calibrated to ensure accurate readings, which is vital for maintaining optimal engine performance, fuel economy, and compliance with emissions standards.