Genuine OEM Audi Engine Coolant Hose, part number 8K0121109AA. This hose is responsible for transferring engine coolant between various components, playing a critical role in maintaining optimal engine operating temperature. It features pre-formed bends and integrated clamps for precise routing within the engine bay. Constructed from durable, heat-resistant rubber, it weighs approximately 0.20 kg. Opting for a genuine OEM coolant hose guarantees the correct material composition and pressure resistance, preventing leaks and ensuring long-term cooling system reliability.