Genuine OEM Volkswagen Coolant Hose with Coupling, part number 5QA122101A. This hose is a critical component of the engine cooling system, responsible for transporting coolant between various engine components and the radiator to maintain optimal operating temperatures. It features an integrated coupling for secure connection. Weighing 0.538 kg and measuring 0.58 meters in length, this hose is designed for durability. Choosing genuine OEM ensures the correct material resistance to heat and coolant, precise routing geometry, and secure connections to prevent leaks and ensure efficient cooling.