Genuine OEM Volkswagen Lambda Sensor, part number 059906262J. This sensor is critical for monitoring the oxygen levels in the exhaust stream, allowing the engine control unit to fine-tune the air-fuel mixture for optimal combustion, fuel efficiency, and reduced emissions. It is installed in the exhaust system. The part weighs 0.145 kg and has dimensions of 0.48m x 0.04m x 0.035m. Genuine OEM lambda sensors are manufactured to strict tolerances for accurate readings and long service life.