AN12 Fuel cell bulkhead fitting matte black. Used to get outlet or inlet from fuel cell, valve cover, breather tank etc. Plastic washers included. SPD AN fittings have the absolute highest quality available. All AN fittings are hard anodized, making them highly wear resistant. The AN fittings can be used with all fuels avalible like gasoline, methanol, ethanol and diesel. They are also suitable for use in water, air and oil systems. We offer a full 5-year warranty on all SPD AN connections.