Genuine OEM Audi Engine Coolant Hose, part number 1K0121157BQ. This hose is designed to carry engine coolant between various components, playing a critical role in the vehicle's thermal management system. Its specific bends and dimensions ensure correct routing and fitment within the engine bay. Weighing 0.087 kg, this genuine OEM hose is manufactured from high-quality, heat-resistant rubber compounds to withstand extreme temperatures and pressures, preventing leaks and ensuring long-term cooling system integrity.