Genuine OEM Audi Coolant Hose, part number 8E2819371B. This hose is a critical component of the vehicle's heating and cooling system, responsible for transporting coolant between engine and cabin components. It is located within the heating and A/C assembly. Constructed from high-quality, heat-resistant rubber, this hose is designed for durability and to withstand system pressures. Genuine OEM coolant hoses are engineered for exact routing and material integrity to prevent leaks and ensure optimal thermal management.