Top Off Your Build With a Billet Fill Cap From Holley or Earl's

By: Todd Veney11/16/2016 < Back to Blog Home
All-new Holley and Earl's billet aluminum fill caps and inspection caps are the perfect finishing touch for fabricated valve covers, fuel cells, oil tanks, and inspection ports. Available in bolt-on or weld-on versions in two different sizes, they're anodized black, compatible with most factory fill caps, and feature either a Holley or Earl's laser-etched logo – take your pick!