Genuine OEM Audi Engine Coolant Hose, part number 4M0121052C. This hose is responsible for transferring coolant between specific engine components, ensuring the cooling system functions effectively to prevent overheating. It is positioned to connect a component to a pipe within the engine's complex cooling circuit. Weighing approximately 0.06 kg, this hose is built to exact specifications. Relying on genuine OEM hoses guarantees the precise dimensions, material resilience, and secure connections needed for long-term reliability and proper fluid circulation.