Genuine OEM Audi Pressure Difference Sensor, part number 04L906051L. This vital sensor is designed to precisely measure the pressure difference across various components within the vehicle's systems, such as the exhaust or intake. Its accurate readings are critical for the engine control unit to manage performance, fuel efficiency, and emissions. The sensor features a durable plastic housing and weighs approximately 0.026 kg. Opting for a genuine OEM sensor ensures factory calibration and signal characteristics, which are essential for reliable engine operation and preventing diagnostic trouble codes.