Genuine OEM Audi Flexible Coolant Hose, part number 05A121107A. This flexible hose is an integral part of the engine's cooling system, facilitating the flow of coolant. It is designed to connect different parts of the cooling circuit, ensuring efficient temperature regulation. Genuine OEM hoses are constructed with materials and tolerances that guarantee durability and resistance to the harsh conditions within the engine bay, providing a secure and long-lasting connection.