#8 An Cap Aluminum

The #8 AN Cap Aluminum from AEROQUIP is a precision-engineered hydraulic fitting cap designed to seal and protect AN fluid lines in high-performance applications. This component serves as a critical protective barrier in hydraulic systems found in aircraft, racing engines, industrial machinery, and custom automotive builds where fluid containment and system integrity are non-negotiable. The blue anodized aluminum construction provides both corrosion resistance and a professional appearance across demanding operational environments.

Manufactured by AEROQUIP—a trusted leader in fluid transfer solutions—this #8 AN cap is engineered to meet strict aerospace and motorsport standards. The aluminum body is anodized in blue, a process that hardens the surface and enhances durability against moisture, oxidation, and chemical exposure. At just 0.06 lbs, the fitting maintains minimal weight while delivering reliable sealing performance, making it ideal for weight-critical applications. The compact 2.25 x 1.1 x 3.75-inch profile ensures it fits cleanly within tight engine bay and system layouts without compromising accessibility or clearance.

This cap is essential for technicians, fabricators, and enthusiasts building or maintaining custom hydraulic systems where open AN ports must be sealed during assembly, testing, or temporary disconnection. It prevents fluid loss, contamination, and air ingress—all critical in precision hydraulic circuits. Whether you're assembling a race engine fuel system, restoring a vintage aircraft, or protecting high-pressure lines on a custom build, the #8 AN Cap Aluminum ensures system cleanliness and prevents costly leaks. Stock this AEROQUIP fitting as part of your complete AN hydraulic line toolkit.