Genuine OEM Volkswagen Coolant Hose, part number 2Q0122051BL. This vital component is responsible for transporting coolant between various engine components and the radiator, ensuring efficient heat dissipation and maintaining optimal engine operating temperature. Weighing 0.429 kg, this genuine OEM hose provides the correct routing geometry and fluid resistance, which is essential for preventing leaks and ensuring the long-term reliability of the engine cooling system.