Genuine OEM Volkswagen Coolant Hose, part number 1N3121054. This hose connects components within the engine's cooling system, featuring a quick-release mechanism for easier installation and removal. It is located in the engine bay, connecting various parts of the cooling circuit. Constructed from durable rubber and plastic for longevity. Genuine OEM coolant hoses are manufactured to precise specifications to ensure correct fitment and optimal coolant flow, preventing leaks and maintaining engine temperature.