Genuine OEM Audi Engine Coolant Hose, part number 1K0121063C. This hose is a vital component of the engine cooling system, responsible for transferring coolant between various engine components to regulate operating temperature. Weighing 0.0826 kg, this genuine OEM hose is manufactured from high-quality, heat-resistant materials to withstand extreme temperatures and pressures. Its precise shape and dimensions ensure a perfect, leak-free fit, which is critical for preventing coolant loss and maintaining engine health.