Genuine OEM Audi Engine Water Coolant Hose, part number 4M0121054E. This critical component is designed to transport coolant efficiently throughout the engine cooling system, maintaining optimal operating temperatures. It is positioned as part of the complex network of hoses and pipes. The hose weighs 0.086 kg and measures 0.275 meters in length. Using a genuine OEM coolant hose ensures resistance to extreme temperatures and pressures, preventing leaks and maintaining the integrity of the cooling system for reliable engine performance.