Genuine OEM Audi Coolant Hose, part number 3D0121073BE. This component is designed to transport coolant efficiently throughout the engine cooling system, maintaining optimal engine operating temperatures. It is a specific curved hose within the complex cooling circuit. Weighing approximately 0.208 kg with dimensions of 0.354m x 0.159m x 0.098m. Choosing a genuine OEM coolant hose ensures the correct routing geometry, material composition for heat and pressure resistance, and reliable, leak-free performance critical for engine longevity.