Genuine OEM Volkswagen Engine Oil Separator, part number 05E103495B. This vital component is responsible for separating oil vapor from crankcase gases before they are recirculated into the engine's intake system. Proper function prevents oil consumption and maintains optimal engine performance and emissions. This black plastic module weighs approximately 0.36 kg. Using a genuine OEM oil separator ensures correct internal baffling and valve operation, which is essential for effective oil-gas separation and preventing sludge buildup.