Genuine OEM Audi Coolant Hose, part number 4K0265036B. This hose is responsible for transporting coolant within the engine's intricate cooling system, ensuring efficient heat dissipation and stable operating temperatures. It is a precisely molded hose, weighing 0.137 kg. Using a genuine OEM hose guarantees correct routing, durable material construction, and resistance to high temperatures and pressures, which is crucial for preventing leaks and maintaining the cooling system's integrity.