Genuine OEM Audi Engine Coolant Hose, part number 4K0121449AA. This hose is engineered to transport coolant efficiently throughout the engine cooling system, maintaining proper operating temperatures. It is a short, curved hose, approximately 0.105 m in length and weighing 0.028 kg. Using a genuine OEM coolant hose guarantees it is made from materials resistant to high temperatures and pressures, with the correct routing geometry and connection points for a leak-free and durable cooling system.