Genuine OEM Audi Flexible Coolant Hose, part number 05L121157AR. This hose is a key part of the engine cooling system, responsible for transporting coolant between engine components and the radiator. It is located in the engine cooling assembly. Constructed from high-quality rubber and reinforced materials to ensure durability and resistance to heat and pressure. Genuine OEM hoses are manufactured to precise specifications for a perfect fit and reliable coolant flow, crucial for maintaining optimal engine operating temperature.