#6 Port Plug 9/16-18

The FRAGOLA #6 Port Plug 9/16-18 is a precision aluminum fitting designed for high-pressure hydraulic and fuel system applications where reliable port closure is essential. This hex head O-ring plug delivers dependable sealing performance in motorsports, aerospace, and industrial fluid transfer systems where component integrity directly impacts safety and system efficiency.

Constructed from aluminum and finished with blue anodizing, this #6 AN port plug features an O-ring seal design that eliminates the need for thread sealant tape while maintaining consistent leak-free performance across thermal cycling and vibration exposure. The 9/16-18 thread specification ensures compatibility with standard 6 AN port configurations found in race engine fuel systems, transmission cooler lines, and hydraulic brake circuits. The hex head design facilitates quick installation and removal with standard wrenches, reducing downtime during system assembly or maintenance.

This fitting is ideal for builders and technicians who demand OEM-quality closure components for custom fuel rails, manifold blocks, and modular cooling systems. The blue anodized finish provides corrosion resistance while offering clear visual identification of component status in engine bays. Whether closing unused 6 AN ports on a performance fuel system or replacing worn plugs in an existing hydraulic setup, this FRAGOLA part delivers the precision fit and durability expected from a manufacturer known for aerospace-grade fluid system components.