Genuine OEM Volkswagen Coolant Hose, part number 2K0122051D. This hose is a critical component in the engine's cooling system, designed to transport coolant between various parts. It connects components in the cold water system, ensuring efficient heat dissipation. Weighing 0.322 kg and measuring 0.44 m in length, this hose is engineered for precise routing and fluid resistance, crucial for maintaining optimal engine temperature and preventing leaks.