Waterman Racing Port PlugsAN-03 through AN-10; choose from the drop down menuDome top with hex socket for easy grip The Waterman line of custom fittings, adapters and hose-ends are a step above the norm, offering uncompromised fuel flow and positive sealing. Constructed of 6061 T6 aircraft grade aluminum or stainless steel, each component is CNC-machined for precision fit and unmatched flow. All billet aluminum fittings are anodized Type II bright dip black for corrosion protection and unrivaled aesthetics.All Waterman fittings and adapters are fully compatible with gasoline and alcohol based fuels.This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.