Genuine OEM Audi Engine Coolant Hose, part number 05A121105. This flexible hose is designed to transport engine coolant between various components of the engine cooling system, often connecting directly to the engine block or cylinder head. It plays a crucial role in regulating engine temperature, preventing both overheating and overcooling. Weighing 0.0801 kg and measuring 0.089m in length, this genuine OEM coolant hose is engineered with specific bends and material compounds to withstand high temperatures and pressures, ensuring leak-free performance and proper coolant flow for efficient engine cooling.