Genuine OEM Volkswagen Coolant Seal, part number 7E0121331. This seal is designed to provide a tight, leak-free closure for a component within the engine cooling system, preventing coolant loss and maintaining system pressure. Weighing approximately 0.069 kg, it is engineered for precise fitment. Choosing a genuine OEM coolant seal ensures the correct material properties for resistance to heat and coolant chemicals, critical for preventing leaks and maintaining engine cooling efficiency.