Genuine OEM Audi Engine Coolant Hose, part number 059121105F. This flexible hose is a vital part of the engine cooling system, responsible for circulating coolant to regulate engine temperature and prevent overheating. It connects various components within the cooling circuit, including the oil cooler. Made from high-quality, heat-resistant rubber, it ensures a secure and leak-proof connection. Choosing a genuine OEM coolant hose guarantees the correct routing geometry, pressure resistance, and material composition for long-lasting, reliable performance.