AN Weld Bung 16AN Male Steel

The AN Weld Bung 16AN Male Steel from Allstar Performance is a precision-engineered hydraulic and fuel system component designed for fabricators, engine builders, and performance mechanics who demand reliable port closure solutions. This weld-on bung serves as a permanent sealing fitting for 16 AN (JIC) ported applications where threaded access points must be capped or plugged during assembly or modification. Whether you're blocking off unused ports on a custom fuel rail, hydraulic manifold, or brake system, this steel bung provides robust closure without leaks or system compromise.

Manufactured in steel with a natural (unpainted) finish, the 16AN Male Weld Bung is designed for direct weld-on installation into compatible manifolds and assemblies. The male 16 AN JIC thread form ensures precise fitment within the AN standard hydraulic ecosystem, while the weld-mount base allows permanent integration into custom or OEM porting schemes. Steel construction delivers superior durability and thermal stability compared to aluminum alternatives, making it ideal for high-heat engine bay environments, fuel system applications, and motorsports builds where vibration and temperature extremes are constant factors.

This component is essential for custom fuel system builders, circle track racers, and engine builders working with aftermarket fuel rails, surge tanks, and manifold assemblies. The weld-on design eliminates future removal risk and ensures a sealed, clean installation that cannot vibrate loose or weep under pressure cycles. Compatible with any 16 AN (JIC) port application, it pairs seamlessly with braided stainless hoses, fittings, and valves found in high-performance fuel delivery and hydraulic brake systems. Installation requires basic welding skills and proper safety protocols for aluminum or steel substrates.