Genuine OEM Audi vent hose, part number 079103209BA. This hose is designed to facilitate the proper routing of crankcase gases within the engine ventilation system. It is constructed from heat-resistant, oil-impermeable materials to ensure long-term durability under high-temperature engine bay conditions. Genuine OEM hoses are essential for maintaining correct vacuum pressure and preventing leaks, ensuring the engine operates within its designed emission and performance parameters.