Genuine OEM Volkswagen Engine Coolant Connection, part number 5G0121131. This component is crucial for creating secure and leak-free junctions within the engine's complex coolant circulation system. It facilitates the flow of coolant between various engine cooling components. Weighing approximately 0.018 kg, this connection piece is engineered for durability and thermal resistance. Using a genuine OEM coolant connection ensures exact fitment, proper sealing, and resistance to temperature fluctuations and corrosive coolants, preventing leaks and maintaining engine health.