Genuine OEM Volkswagen Radiator Seal Strip, part number 5G0121331N. This component is designed to create a tight seal around the radiator, preventing coolant leaks and ensuring the cooling system operates efficiently. It is typically installed at the front of the radiator assembly. Made from high-quality, resilient rubber or flexible polymer, it resists temperature fluctuations and chemical exposure. Using a genuine OEM seal strip guarantees precise dimensions and material composition, which are essential for a leak-free seal and the long-term reliability of the cooling system.