Genuine OEM Audi Engine Coolant Hose, part number 4KL819552. This essential hose is engineered to efficiently transfer coolant between various components within the engine cooling system, playing a vital role in maintaining optimal engine operating temperatures. It connects to a heat exchanger, ensuring proper fluid circulation for effective thermal management. Weighing approximately 0.402 kg, this hose features a precise routing geometry and robust construction. Choosing a genuine OEM coolant hose ensures perfect fitment, resistance to extreme temperatures and pressures, and long-term durability, preventing leaks and maintaining the integrity of the entire cooling system.