Genuine OEM Audi Engine Coolant Hose, part number 5Q0121053A. This essential component is designed to carry engine coolant between various engine cooling system components, ensuring efficient heat transfer and maintaining optimal engine operating temperature. It is specifically routed within the engine bay to connect critical cooling parts. Weighing 0.361 kg and measuring 0.648 m in length, this hose is constructed from durable, heat-resistant materials. Opting for a genuine OEM coolant hose guarantees the correct routing geometry, material composition, and pressure resistance for reliable, leak-free performance and long service life.