Genuine OEM Porsche Joining Socket, part number 99610623871. This adapter is designed to connect engine coolant pipes, ensuring a secure and leak-free fluid transfer within the cooling system. It plays a critical role in maintaining the proper flow of coolant. Made from durable materials, it is built to withstand the demanding conditions of the engine bay. Genuine OEM parts guarantee precise fitment and reliable operation, vital for the cooling system's efficiency.