Product details:

Each of these caps will top-off your fuel cell with CNC-machined 6061 T-6 aluminum, a bright black anodized finish, and a laser-etched "Holley Equipped" logo. They are easy-to-grip, screw-on styles with O-ring seals and stainless steel hardware. Upgrade your stock cap with the style and performance of a Holley fuel cell cap!