Genuine OEM Audi Breather Line, part number 4M0201994AR. This line plays a vital role in the vehicle's system by allowing for pressure equalization or the ventilation of vapors, which is essential for emissions control and preventing system overpressure or vacuum. It features a corrugated hose design with an inline component. Measuring approximately 0.23m in length, a genuine OEM breather line ensures the correct material composition, precise routing, and proper function of any integrated valves or filters for optimal system performance and compliance.