Genuine OEM Audi Engine Coolant Feed Hose, part number 4K0121448M. This hose is responsible for supplying coolant to the engine cooling system, a critical function for maintaining optimal engine temperature and preventing overheating. It connects directly to a heat exchanger, facilitating efficient coolant circulation. Constructed from durable rubber, this hose measures approximately 0.15 meters in length. Opting for a genuine OEM hose ensures precise fitment, proper material composition for coolant resistance, and long-term reliability in the demanding engine environment.