Genuine OEM Audi Breather Hose, part number 03C103493AM. This hose plays a critical role in the engine's emission control system by routing crankcase gases back into the intake for re-combustion. It helps maintain proper engine ventilation and prevents oil contamination. The hose is made from durable, flexible material, measuring 0.27m in length. Opting for a genuine OEM breather hose guarantees correct routing geometry, material resistance to oil and heat, and a leak-free connection, essential for emission compliance and engine health.