Holley Equipped Billet Fill Cap - 241-228 rear-break 1x Brass Adapter (1/2 inch

1x Brass Adapter (1/2 inch Female to 7/16 inch Male)

Note: This system eliminates the Factory Exhaust Valves and provides "Dummy" valve stands so the Factory Actuators still work without throwing off a code

4L V8 1979 - 1985 GMC P3500 Value Van 454/7

3x Master Cylinder Lines

3L V8 383 CID w/ Carter AFB 4BBL

Holley Equipped Billet Fill Cap - 241-228 rear-break 1x Brass Adapter (1/2 inchOverview: Looking for an alternative to your stock fuel cell cap or maybe you need a fill cap for that custom oil tank or valve cover you are building? Well, look no further! Holley has created a full line of Billet Fuel Cell Caps and Billet Fill Caps. Holley caps are CNC machined from 6061 T6 billet aluminum and they feature a bright black anodize for great looks and corrosion protection. Each cap features a laser etched Holley Equipped logo so you