Genuine OEM Volkswagen Breather Hose, part number 03P103493A. This hose is a critical component of the engine's ventilation system, designed to allow gases to vent from the crankcase. It helps maintain proper internal engine pressure and prevents the buildup of harmful contaminants. Made from durable, flexible rubber/plastic, it ensures a secure and leak-free connection within the engine assembly. Using a genuine OEM breather hose guarantees correct material composition, routing geometry, and resistance to engine fluids and temperatures.