Genuine OEM Audi Coolant Hose with Coupling, part number 8V0122101C. This multi-branched hose assembly is a critical component in the engine's cooling system, designed to connect various cooling system components for efficient fluid transfer. It is positioned centrally within the cooling circuit, ensuring proper coolant circulation. Choosing a genuine OEM hose assembly guarantees precise routing geometry, correct material composition for resistance to heat and pressure, and factory-grade couplings for a secure, leak-free connection and reliable long-term performance.