AN Cap -12

The ALLSTAR PERFORMANCE AN Cap -12 is a precision aluminum fitting designed for high-pressure hydraulic and fluid transfer systems in performance vehicles, racing applications, and custom automotive builds. This black anodized -12 AN cap seals -12 AN port connections with reliable, leak-free performance under demanding conditions. Built to industry AN (Army-Navy) specifications, it provides the exact fit and durability required in fuel systems, brake lines, coolant circuits, and transmission coolers where vibration resistance and corrosion protection are critical.

The -12 AN designation refers to a 3/4-inch tube diameter port size, widely used in racing and high-flow automotive systems. Constructed from aluminum and finished with black anodize coating, this cap resists oxidation and salt-air corrosion while maintaining a professional appearance. The anodized finish also provides electrical insulation properties beneficial in systems where galvanic isolation matters. At 0.1 lbs and compact dimensions, the cap integrates seamlessly into tight engine bays and chassis setups without adding unnecessary weight—a consideration critical in weight-sensitive motorsports builds.

This fitting is essential for fabricators, engine builders, and performance enthusiasts who assemble or modify fuel delivery, cooling, and brake systems using AN-standard hose and port configurations. Whether capping unused -12 AN ports on a manifold during system redesign or protecting active connections during storage and transport, the ALLSTAR PERFORMANCE cap ensures ports remain clean and pressurized. Its compatibility with standard -12 AN male and female ports makes it a reliable component in any system utilizing this universal automotive standard.