Genuine OEM Audi Engine Breather Pipe, part number 077103215H. This pipe plays a vital role in the engine's crankcase ventilation system, allowing blow-by gases to escape or be recirculated for emissions control. It is positioned on the engine, connecting to the crankcase or valve cover. Weighing approximately 0.10 kg and measuring 0.15 meters in length, it is designed for specific routing and connection points. Choosing a genuine OEM breather pipe ensures correct material composition for resistance to oil vapor and heat, preventing cracks and maintaining proper engine operation.