Genuine OEM Audi Cooling System Breather Line, part number 80A121081BA. This critical component is designed to allow trapped air to escape from the engine's cooling system, preventing air pockets that can lead to overheating and inefficient coolant circulation. Weighing approximately 0.04 kg and measuring 0.34 m in length, this line is constructed from durable plastic or rubber. Choosing a genuine OEM breather line ensures precise routing, proper sealing, and resistance to coolant and temperature fluctuations, which is essential for maintaining a fully functional and air-free cooling system.

Catalogue entry: LINE left front.