Genuine OEM Audi Engine Water Coolant Pipe, part number 059121075ES. This essential metal pipe is responsible for circulating coolant throughout the engine, playing a critical role in maintaining the engine's optimal operating temperature and preventing overheating. Weighing approximately 0.1047 kg and measuring 0.308 meters in length, it features specific bends and connection points for precise integration into the cooling system. Choosing a genuine OEM coolant pipe ensures the correct routing geometry, resistance to corrosion and pressure, and a perfect, leak-free seal, which are vital for the longevity and reliability of the engine cooling system.