Genuine OEM Audi Engine Breather Line, part number 8W1121081BC. This line is an essential component of the engine's ventilation system, designed to safely vent crankcase gases and maintain proper internal engine pressure. It connects to a reservoir within the engine bay. Weighing 0.0403 kg and measuring 0.74 m in length, this line is constructed from durable, heat-resistant materials. Genuine OEM breather lines ensure precise routing and material integrity, preventing blockages or leaks that could compromise engine performance and emissions compliance.