Genuine OEM Volkswagen Engine Coolant Hose, part number 1K0122157BE. This hose is an essential part of the engine's thermal management system, responsible for transporting hot or cold coolant between various engine components. It ensures the engine operates within its optimal temperature range, preventing overheating or inefficient operation. Measuring approximately 0.2m in length, this hose is designed with specific bends and material properties to withstand high temperatures and pressures. Using a genuine OEM hose guarantees precise fitment, resistance to degradation from coolant chemicals, and long-term reliability, crucial for engine health.