Genuine OEM Volkswagen Engine Coolant Hose, part number 4M0819342AF. This hose is a crucial part of the engine cooling system, responsible for circulating coolant between various engine components to maintain optimal operating temperatures. Measuring approximately 0.2 meters in length, it is designed for specific routing and connection points. Using a genuine OEM coolant hose ensures resistance to high temperatures and pressures, proper flexibility, and exact fitment, which are essential for preventing leaks and engine overheating.