Genuine OEM Volkswagen Engine Coolant Hose, part number 7N0122157AJ. This vital component is part of the engine cooling system, responsible for transporting hot and cooled coolant between the engine, radiator, and other cooling system components. Its precise routing and durable construction are crucial for maintaining optimal engine operating temperatures and preventing overheating. Weighing 0.584 kg and measuring approximately 41 cm in length, this hose is designed to withstand high temperatures and pressures. Choosing genuine OEM ensures the correct material composition for heat and coolant resistance, precise internal diameter for optimal flow, and factory-specified routing geometry for a secure, leak-free connection and long service life.