10an ORB Port Plug w/ 1/8NPT Female Port Black

The 10 AN ORB port plug with 1/8 NPT female port in black from REDHORSE PERFORMANCE is an essential hydraulic and fuel system component for custom automotive builds, performance engine bays, and motorsport applications. This adapter serves as a professional-grade solution for blocking off unused ORB (O-Ring Boss) ports on fuel rails, oil coolers, transmission coolers, and custom plumbing systems while maintaining a clean, integrated appearance. Whether you're running a complex fuel injection setup, custom cooling loops, or prototype engine modifications, this port plug eliminates the need for loose fittings and reduces potential leak points in your system.

Engineered with precision ORB threading and a dedicated 1/8 NPT female port, this plug allows you to seal off primary connections while retaining the ability to install gauges, sensors, or diagnostic equipment through the secondary port. The black anodized aluminum construction provides corrosion resistance and a factory-finished appearance in engine compartments exposed to fuel, oil, and temperature cycling. The compact 3.85-inch length and lightweight 0.075-pound design ensure easy installation in tight underhood spaces without adding unnecessary bulk to your fuel system architecture.

This REDHORSE PERFORMANCE adapter is ideal for custom fuel system builders, engine swap specialists, and performance shops fabricating multi-port cooling and fuel distribution systems. Installation is straightforward—simply thread the ORB end into your component with thread sealant appropriate for your fluid type, and use the NPT port for future gauge or solenoid connections. The dual-port design provides flexibility in evolving builds, making it invaluable when system configurations change or prototypes require field modifications without complete system redesign.