#6 Caps (2 Per Pack)

EARLS #6 AN aluminum caps (2 per pack) provide reliable port closure for hydraulic and pneumatic systems in high-performance fluid power applications. These blue anodized AN fittings meet aerospace and industrial standards, delivering dependable sealing across pressure-rated piping assemblies used in racing, marine, and off-road equipment.

The #6 AN designation indicates a 3/8-inch tube connection size, commonly specified in fuel systems, brake lines, and transmission cooler circuits. Aluminum construction keeps component weight minimal—critical in motorsports where every gram impacts performance—while the blue anodized finish provides corrosion resistance in salt-air and moisture-heavy environments. The pair format allows for dual-line termination or convenient backup inventory. These caps seal unused ports to prevent fluid contamination, vapor loss, and system pressure leakage during storage or inactive periods.

Technicians, engine builders, and custom fabricators rely on EARLS fittings for fuel system assembly, hydraulic brake upgrades, and cooling system modifications on high-horsepower vehicles. The standardized AN size ensures compatibility with industry-standard hose and tubing across drag racing, road racing, and off-road platforms. Keeping spare caps on hand prevents downtime when disconnecting or isolating system sections during maintenance or troubleshooting.

AN fittings remain the baseline standard in performance automotive and aerospace fluid systems due to proven reliability, universal thread compatibility, and streamlined logistics. EARLS' reputation for precision manufacturing and material consistency makes these caps a trusted choice for builders who demand consistency across their fleets and projects.