Billet 20-Liter Military Fuel Cap

Built for Real Use

Military fuel cans are built tough—your cap should be too.

The Ai13 Billet 20L Military Fuel Cap is CNC-machined from 6061 billet aluminum to replace the factory plastic lid with a stronger, longer-lasting solution designed for real-world use.

Why Upgrade

Factory plastic caps work… until they don’t. Over time, they can crack, wear out, or fail—especially in harsh environments.

Upgrading to a billet aluminum cap gives you:

• Greater durability in demanding conditions
• Better sealing performance for fuel storage
• Longer service life without constant replacement
• More reliable fuel storage when it matters most

Features

• Precision machined from 6061 billet aluminum
• Designed for 20-liter Military Fuel Containers (MFC)
• FIts most 20L military fuel cans
• Fuel-resistant Viton® O-ring for a secure, leak-free seal
• Stainless steel braided tether
• Free-rotating tether mount prevents twisting and binding
• Direct replacement for factory plastic caps
• Built for gasoline, diesel, and fuel storage applications
• 100% made in the USA

Built for the Long Haul

Military fuel containers are some of the toughest cans out there. This cap brings that same level of durability to the part that usually fails first.

If you rely on your fuel cans, upgrading the cap is one of the simplest ways to improve the strength and reliability of your entire setup.

Compatibility

Designed to fit most 20-liter Military Fuel Containers (MFC)

Disclaimer

AI13 Billet Products is not affiliated with, sponsored by, or endorsed by any original equipment manufacturer of military-style fuel containers. Our billet caps are aftermarket accessories designed to fit the physical dimensions of common 20-liter military-style fuel containers.