Genuine OEM Audi Differential Flanged Shaft, part number 0B6409356B. This essential component plays a vital role in the vehicle's drivetrain, transmitting power from the differential to other connected components, such as the driveshaft or axle. It is typically installed at the differential output. Constructed from high-strength steel, this flanged shaft is designed to withstand significant torque and rotational forces. Choosing a genuine OEM flanged shaft ensures precise machining, correct spline engagement, and material integrity, which are critical for smooth power delivery and the overall reliability of the drivetrain.