Genuine OEM Audi Coolant Hose, part number 7E0121096E. This hose is specifically designed to transport coolant to the exhaust gas cooler, playing a vital role in managing exhaust gas temperatures and supporting emissions control. It is positioned within the engine cooling system, connecting directly to the exhaust gas cooler. Measuring approximately 0.42 meters in length, a genuine OEM coolant hose ensures correct routing geometry, material resistance to high temperatures and coolant, and reliable sealing for optimal system performance.