Genuine OEM Audi Connecting Hose, part number 427131605K. This hose serves as a crucial connection point for various components within the engine cooling system, facilitating the flow of coolant. It is positioned as part number 24 in the diagram. Constructed from durable rubber and metal, it is designed to withstand engine temperatures and pressures. Genuine OEM hoses are manufactured to precise specifications, ensuring correct routing and fluid resistance for optimal system performance and longevity.