Holley is here to showcase new fuel cell and fill caps from Earl’s Performance Plumbing. These CNC-machined units are crafted from high-grade 6061-T6 billet aluminum, and are meant to stay looking and acting great for years to come thanks to the anodized bright black finish.

Official Release:

Holley is proud to announce Earl’s Performance Plumbing’s new billet aluminum fuel cell and fill caps.

These Earl’s caps are CNC-machined from 6061-T6 billet aluminum and anodized a bright black to ensure durability and good looks for years to come. The caps are available with either a 5.343″ 12-bolt flange, or a 4.438″ 6-bolt flange. Both feature a large 3″ opening with an easy to grip screw on cap that utilizes an o-ring seal. Stainless steel hardware is included for an easy installation.

For custom applications, Earl’s also offers billet filler cap kits so you can put a filler cap or inspection plug anywhere you need it. These are available in three styles: a bolt-on kit , an aluminum weldable bung kit, and a steel weldable bung kit. All three feature an easy to grip screw-on cap and o-ring seal.

Features:

• CNC-machined from 6061-T6 billet aluminum
• Anodized bright black finish ensures long-lasting looks and durability
• Billet filler cap kits allow for installation of filler cap or inspection plug anywhere you need it