8AN Straight Thread O-Ring Port Plug Clear

The 8AN Straight Thread O-Ring Port Plug Clear from REDHORSE PERFORMANCE is a precision hydraulic fitting designed to seal unused ports in high-pressure fluid systems. This plug serves as an essential component in custom fuel, coolant, and brake line applications where port closure is required without future access. Built for professionals and serious enthusiasts who demand reliability in racing, off-road, and performance engine builds, this fitting prevents fluid leakage and contamination at critical junction points.

Manufactured from lightweight aluminum with clear anodized finishing, the 8AN Straight Thread O-Ring Port Plug features a hex head design for wrench engagement and an integrated O-ring seal that eliminates the need for additional sealant tape or thread-locking compounds. The straight thread configuration accepts standard 8 AN hose adapters, and the O-ring design creates a metal-to-metal seal that handles pressure cycling and vibration without degradation. Clear anodizing provides corrosion resistance while maintaining visibility of the underlying material quality—a hallmark of REDHORSE's 814 Series performance fittings.

This plug is ideal for customers fabricating custom hydraulic systems, turbo setups, and modular engine configurations where port management is critical. Installation requires only a wrench sized for the hex head; no special tools or training are necessary. Compatible with any system using 8 AN straight thread ports, this fitting integrates seamlessly into fuel delivery, cooling circuits, and brake systems operating at high pressure and temperature extremes common in motorsports applications.