Genuine OEM Audi Coolant Hose, part number 80A145924Q. This hose is designed to carry coolant between various engine components, facilitating efficient heat transfer and maintaining optimal engine temperature. It connects to the coolant expansion tank and other cooling system lines. Weighing approximately 0.198 kg and measuring 0.415 m in length, this hose is engineered for precise fitment and durability. Choosing a genuine OEM hose ensures correct routing geometry, material resistance to coolant chemicals, and reliable, leak-free performance.