Genuine OEM Audi Coolant Hose with Coupling, part number 5N0122157BD. This hose is designed to transport coolant efficiently throughout the engine cooling system, maintaining optimal operating temperatures. It features a quick release connection for secure and easy installation. Weighing approximately 0.197 kg, this hose is built to precise factory specifications. Using a genuine OEM coolant hose ensures correct routing geometry, material resistance to heat and pressure, and a reliable, leak-free connection for long-term cooling system integrity.