10AN/JIC Straight O-Ring Port Plug Black

The 10AN/JIC Straight O-Ring Port Plug Black by REDHORSE PERFORMANCE is an essential component for any serious automotive enthusiast working with high-performance fuel systems, hydraulic lines, or custom cooling circuits. This precision-engineered port plug seals off unused AN fittings in manifolds, adapters, and distribution blocks, preventing fluid leakage and contamination in modified engine bays. Whether you're building a turbocharged fuel system, upgrading your power steering setup, or integrating auxiliary cooling, having quality plugs on hand ensures a professional installation without compromise.

This 10AN straight port plug features a machined aluminum or steel body with an integrated O-ring seal that eliminates the need for additional sealant tape or thread compound. The O-ring design provides a leak-free, dry-break connection that resists high-pressure cycles and thermal cycling common in forced-induction or modified cooling applications. REDHORSE PERFORMANCE's black anodized finish not only matches modern engine bay aesthetics but also protects against corrosion in harsh under-hood environments. The straight configuration allows for tool-free installation in tight spaces and minimal protrusion into component cavities.

Mechanics and fabricators working on custom turbo kits, transmission cooler installs, or fuel system upgrades will appreciate the reliability and compact dimensions of this plug. It's compatible with any JIC-threaded 10AN port found on aftermarket fuel rails, braided hose adapters, block-mounted fittings, or OEM-replacement manifolds. The lightweight design (0.08 lbs) makes inventory management simple, and the 10AN size covers a wide range of applications across domestic and import platforms. Installation is straightforward: simply thread into the unused port by hand or with a 3/8" wrench until snug—over-tightening will damage the O-ring seal.