Genuine OEM Audi Coolant Hose, part number 5Q0121156B. This hose is designed to transport coolant efficiently within the engine cooling system. It connects various components, facilitating heat exchange and maintaining optimal engine operating temperatures. Weighing 0.351 kg and measuring approximately 0.45m in length, this hose is constructed from high-quality, heat-resistant rubber compounds. Using a genuine OEM hose ensures precise fitment, proper routing, and long-term durability, preventing leaks and maintaining cooling system integrity.