Genuine OEM Audi Engine Coolant Hose, part number 0P2121051. This hose is crucial for transporting coolant within the engine cooling system to regulate engine temperature. It connects components like pipes and pumps, ensuring a sealed and efficient flow. Weighing 0.048 kg and measuring 0.065m in length, this hose is designed for precise fitment and durability. Using a genuine OEM coolant hose ensures the correct material composition and routing geometry, preventing leaks and maintaining optimal engine cooling performance.