Genuine OEM Volkswagen Flexible Coolant Hose, part number 3D0122051AD. This hose is a critical component of the engine's cooling system, facilitating the flow of coolant between various parts. It is positioned in the engine bay, connecting to the radiator and other cooling system components. Constructed from high-quality rubber and plastic for durability and resistance to heat and pressure. Genuine OEM parts ensure precise fitment and long-lasting performance, crucial for the reliability of the cooling system.