Genuine OEM Volkswagen Oil Separator, part number 03F103464D. This component plays a crucial role in the engine's crankcase ventilation system by separating oil vapor from blow-by gases before they are recirculated or vented. It is typically integrated into the engine's valve cover or PCV system. Constructed from durable black plastic and weighing approximately 0.23 kg, this genuine OEM oil separator ensures proper engine breathing and prevents oil contamination, which is vital for long-term engine health and performance.