Genuine OEM Volkswagen Breather Line, part number 06N103213. This line allows for the controlled release of crankcase pressure and vapors, contributing to engine ventilation. It is positioned as item 3 in the diagram, connecting to the engine block. This breather line weighs approximately 0.06 kg and measures 0.355m in length. Genuine OEM breather lines are designed with the correct internal diameter and material resistance to ensure proper function and longevity.