Genuine OEM Volkswagen Engine Coolant Connection, part number 0EA121131E. This component is integral to the engine cooling system, providing a sealed pathway for coolant circulation between various hoses and engine components. It ensures efficient heat transfer and helps maintain optimal engine operating temperatures. Made from durable, heat-resistant plastic and including a sealing O-ring, it weighs approximately 0.033 kg. Opting for a genuine OEM coolant connection guarantees precise fitment, proper sealing, and resistance to thermal cycling and coolant chemicals, preventing leaks and system failures.