Genuine OEM Volkswagen Cooling System Breather Line, part number 04L121070AB. This critical component is designed to allow trapped air to escape from the vehicle's cooling system, preventing air pockets that can lead to overheating and inefficient coolant circulation. It is an integral part of the engine cooling system, connecting various components to maintain proper fluid levels and pressure. This assembly consists of rigid pipes and flexible hoses, engineered for specific routing and temperature resistance. Using a genuine OEM breather line ensures correct routing geometry, material integrity, and precise connections, which are essential for the long-term reliability and performance of the engine cooling system.

Catalogue entry: PIPE.