Genuine OEM Nissan Fuel Filler Neck Grommet, part number 17240AN000. This grommet seals the fuel filler neck, preventing fuel vapors from escaping and debris from entering the fuel tank. It is a vital component for emissions control and maintaining the integrity of the fuel system. Made from durable, fuel-resistant material. Genuine OEM guarantees precise fit and material quality for safe and efficient fuel delivery.