Low Profile ORB Port Plug -4AN

The Low Profile ORB Port Plug -4AN from Vibrant Performance is a precision-engineered fluid system component designed for automotive cooling, fuel, and hydraulic applications where space is limited. This specialized adapter plug serves as a port block-off fitting in high-performance engine bays, race vehicles, and modified suspension systems, providing a clean and secure termination point for factory ORB ports that need temporary sealing or routing changes.

Manufactured to Vibrant Performance's OEM-level tolerances, the Low Profile ORB Port Plug -4AN features a compact design that fits into tight engine compartment configurations. The -4AN designation indicates a 4-size AN (Army-Navy) thread standard, which is commonly used in hydraulic and cooling circuit applications. The ORB design incorporates a 37-degree flare seat with an integrated O-ring groove, ensuring leak-free sealing without the need for thread sealant tape or additional gaskets.

This fitting is ideal for those fabricating custom radiator hose layouts, installing aftermarket cooling components, or reconfiguring fuel line architecture on turbocharged or naturally aspirated builds. Its low-profile construction minimizes protrusion into adjacent components, making it critical for constrained engine compartments on street performance vehicles and drag cars.