Genuine OEM Volkswagen Coolant Hose, part number 04L121036. This hose is an essential component of the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. It is integrated into the complex network of cooling lines. Weighing approximately 0.043 kg and measuring 7.5 cm in length, this hose is designed for specific routing. Choosing a genuine OEM coolant hose ensures the correct material composition, pressure resistance, and precise molded shape for leak-free operation and long-term durability in high-temperature environments.