Genuine OEM Hyundai Radiator Filler Neck and Hose Assembly, part number 25327S0000. This assembly connects the radiator to the expansion tank, ensuring proper coolant circulation and system pressure. It is located at the front of the engine bay, connecting the radiator to the expansion tank. Made with durable materials for long-lasting performance. Genuine OEM parts ensure exact fitment and material integrity for critical cooling system components.