Genuine OEM Volkswagen Engine Coolant Hose, part number 4N0121056AJ. This hose is a vital component of the engine cooling system, responsible for transporting engine coolant to maintain optimal operating temperatures. It ensures efficient heat transfer and prevents engine overheating. Weighing 0.038 kg and measuring 0.125 m in length, this hose is constructed from durable, heat-resistant materials. Choosing a genuine OEM coolant hose guarantees correct routing geometry, pressure resistance, and material compatibility with engine coolants, preventing leaks and ensuring reliable engine cooling.