Low Profile 12AN ORB Port Plug Black

The Low Profile 12AN ORB Port Plug Black from REDHORSE PERFORMANCE is a precision-engineered hydraulic fitting designed for high-performance fuel, oil, and coolant systems in custom-built engines and modified vehicles. Whether you're building a turbocharged street car, a dedicated race engine, or upgrading your factory fuel system, this adapter plug seals unused ORB (O-Ring Boss) ports with a compact footprint that maximizes underhood real estate. Eliminating unused ports prevents contamination, leaks, and pressure loss—critical factors in any precision fuel rail, turbo feed line, or transmission cooler setup where every connection matters.

The 12AN ORB designation indicates this port plug is sized for 12 AN (Army-Navy) hose fittings, a standard measure in the custom automotive and motorsport industries where flow capacity and pressure ratings are non-negotiable. The low-profile design reduces profile height while maintaining the ISO 6162 O-ring seal specification inherent to ORB ports, allowing installation in tight engine bays or complex manifold geometries without interference. The black anodized aluminum construction resists corrosion, handles thermal cycling in high-heat engine compartments, and provides a clean aesthetic in visible installations—ideal for show-quality builds or professional race engines where every detail is scrutinized.

This fitting is essential for any builder working with aftermarket fuel rails, custom turbo oil supply lines, nitrous systems, or transmission cooling circuits that feature ORB port manifolds. The compact 2.8-inch width and lightweight 0.07-pound construction make it ideal for weight-conscious applications and tight packaging scenarios common in engine bay modifications. Installation is straightforward—simply thread the plug into the unused ORB port using standard hydraulic-fitting tools—making it equally valuable for professional shop installations and home-garage builds. Compatible with all AN hose systems and standard hydraulic adapters, this REDHORSE PERFORMANCE plug delivers reliability and professional-grade sealing across street, turbo, and motorsport applications.