Genuine OEM Audi Lambda Sensor, part number 04E906262EQ. This sensor measures oxygen content in the exhaust gas, providing crucial data to the engine control unit for optimizing fuel injection and emissions. It is typically located in the exhaust system. The sensor features a threaded metal body with a ceramic sensing element and a multi-pin electrical connector. Genuine OEM lambda sensors are precisely calibrated to ensure accurate readings, contributing to optimal engine performance, fuel efficiency, and compliance with emissions standards.