Genuine OEM Audi Engine Coolant Hose, part number 8K0121164R. This critical component is responsible for transporting engine coolant between various engine components, maintaining optimal operating temperatures. It is designed for specific routing within the engine bay. The hose is made from durable, heat-resistant materials and measures approximately 82 cm in length. Using a genuine OEM coolant hose ensures correct fluid resistance, pressure handling, and precise routing geometry, preventing leaks and maintaining cooling system integrity.