Genuine OEM Volkswagen Upper Cooler Gasket, part number 3C0121345AL. This component functions as a seal and cover for the upper part of the cooler assembly. It creates a tight barrier to prevent fluid leaks and ensures proper sealing for optimal cooling system performance. This gasket measures 0.575 meters in length and weighs 0.051 kg. Using a genuine OEM gasket ensures the correct material composition, precise dimensions, and long-term sealing integrity, critical for preventing coolant loss and maintaining system pressure.