Aluminum Weld Bung 1/4in Female

The Aluminum Weld Bung 1/4in Female from VIBRANT PERFORMANCE is a precision weld-on bung designed for custom exhaust systems, fuel lines, coolant systems, and other fluid transfer applications where a sealed port is required. This 1/4 inch NPT female fitting serves as a bulkhead adapter, allowing technicians and fabricators to integrate ports into welded tubing and tanks without compromising structural integrity. The weld-on design makes it ideal for high-performance automotive builds, racing applications, and industrial fabrication where reliability and leak-free sealing are non-negotiable.

Constructed from lightweight aluminum, this bung features a female NPT threaded port that accepts standard 1/4 inch male NPT fittings and adapters. The weld-on base allows direct fusion to tubing, tanks, and manifolds, creating a permanent, pressure-rated joint that withstands thermal cycling and vibration. Aluminum construction offers excellent corrosion resistance while maintaining minimal weight—critical for performance vehicles where every pound counts. The natural finish is ready for welding and can be painted or left bare depending on application requirements.

Fabricators, engine builders, and custom fuel system installers rely on this bung to create sealed ports for gauge sensors, breather lines, and fluid injections without drilling or threading into critical areas. It is compatible with any 1/4 inch NPT male fitting, making it universally adaptable across automotive, marine, and industrial markets. Installation requires MIG or TIG welding to the target surface; proper preparation and technique ensure a strong, leak-free seal rated for both fuel and coolant systems. At just 0.04 lbs, it adds minimal weight to any build while delivering professional-grade reliability.