#12 Cap

The #12 Cap from EARLS is a precision aluminum fitting designed for high-performance fuel and fluid systems in motorsports, marine, and industrial applications. This 12 AN cap serves as a critical sealing component for -12 AN ports, preventing fluid leakage while maintaining system integrity under pressure. Built for professionals and enthusiasts who demand reliability, the #12 Cap is essential for anyone assembling or servicing custom fuel lines, oil coolers, or hydraulic systems.

Manufactured from lightweight aluminum and finished in blue anodize, this cap provides corrosion resistance while reducing overall system weight—a critical advantage in race-oriented builds. The blue anodized coating not only protects against oxidation but also makes it easy to identify -12 AN components at a glance during assembly or maintenance. The compact 1.8 x 1.5 x 2.5 inch profile and minimal 0.08 lb weight ensure it fits seamlessly into tight engine bays without adding unnecessary bulk. EARLS' precision engineering guarantees a secure, leak-free seal when properly installed on any -12 AN female port.

This #12 Cap is ideal for custom fuel system builds, LS swaps, vintage hot rods, and competition vehicles where every detail matters. Whether you're capping off an unused -12 AN port to maintain system cleanliness or completing a fuel delivery circuit, this fitting delivers trusted performance. Installation is straightforward—simply thread onto the corresponding -12 AN female fitting and torque to manufacturer specifications. Sold individually, the #12 Cap integrates seamlessly with EARLS hose, fittings, and manifolds for complete system compatibility.