Aluminum Weld Bung -6AN Male

The Vibrant Performance Aluminum Weld Bung -6AN Male (VIB11151) is a precision weld-on port fitting designed for custom fluid line routing in high-performance fuel, coolant, and hydraulic systems. This aluminum bung accommodates -6AN (3/8-inch) male AN connections and features a robust 7/8-inch flange footprint engineered to distribute loads evenly across welded joints, making it essential for fabricators building race-spec fuel systems, custom cooling loops, and competition engine builds.

Constructed from lightweight aluminum in natural finish, this weld-on fitting delivers material efficiency without sacrificing structural integrity. The 7/8-inch flange provides adequate surface area for TIG or MIG welding, ensuring the bung integrates securely into aluminum or steel manifolds and tanks. The -6AN male thread allows direct coupling to standard AN hose fittings, streamlining assembly and reducing adapter complexity. Weight at just 0.02 lbs minimizes system mass—critical in motorsport applications where every tenth of a pound impacts performance and weight distribution.

This fitting serves fabricators, engine builders, and custom system integrators who demand precise port connections on non-standard manifolds, catch tanks, surge tanks, and cooler mounts. Vibrant Performance is recognized for producing OEM-quality AN fittings and adapters used throughout the performance aftermarket, and this bung reflects that manufacturing standard. Whether routing fuel from a custom tank, integrating secondary cooling circuits, or establishing test ports on experimental systems, the -6AN weld bung provides a reliable, repeatable anchor point that eliminates improvised solutions and potential leak points.