Genuine OEM Audi Engine Coolant Hose, part number 8K0121081AQ. This pre-formed hose is an essential part of the engine cooling system, responsible for transporting coolant between various components to regulate engine temperature. Weighing 0.07 kg and measuring 0.48 m in length, it is constructed from high-quality, heat-resistant rubber and plastic. Choosing genuine OEM ensures the correct routing geometry, precise fitment, and material durability to withstand high temperatures and pressures, preventing leaks and cooling system failures.