Genuine OEM Volkswagen Cylinder Head Breather Line, part number 03L103493K. This essential hose is responsible for venting crankcase gases from the engine, preventing pressure buildup and ensuring proper engine operation and emissions control. Made from durable, heat-resistant plastic or rubber, it weighs approximately 0.06 kg and measures 0.253 meters in length. Opting for a genuine OEM breather line guarantees the correct routing geometry, material resistance to oil and heat, and proper connection points, which are vital for maintaining engine performance and preventing leaks.