Genuine OEM Volkswagen Engine Coolant Hose, part number 3Q0122157AB. This hose is a critical component in the engine cooling system, responsible for circulating coolant to dissipate heat and maintain optimal engine operating temperatures. It is positioned within the engine bay, connecting specific cooling system components. Manufactured from high-quality, heat-resistant rubber or silicone, it is designed to withstand the demanding conditions of the engine environment. Choosing a genuine OEM coolant hose ensures precise fitment, correct material specifications, and reliable performance, preventing leaks and ensuring the longevity of the cooling system.