Genuine OEM Audi Oil Separator Pressure Control Valve, part number 06E103547AC. This component is integral to the engine's crankcase ventilation system, regulating pressure within the oil separation system to prevent oil consumption and maintain engine cleanliness. Weighing 1.026 kg, it is a significant part of the engine's emissions control. Using a genuine OEM oil separator ensures correct pressure regulation, effective oil-air separation, and proper sealing, which are vital for engine longevity, emissions compliance, and preventing oil leaks.