Genuine OEM Volkswagen Coolant Hose, part number 3Q0122157AG. This hose is a critical component in the engine cooling system, facilitating the flow of coolant between engine components and the radiator. It is typically located in the engine bay, connecting various parts of the cooling circuit. Constructed from high-quality rubber and plastic, it is designed to withstand high temperatures and pressures. Genuine OEM parts ensure precise fitment and optimal system function, maintaining the integrity of your vehicle's cooling system.