NPT Female Weld Bung 1/2in-14 Aluminum

The NPT Female Weld Bung 1/2in-14 Aluminum from ALLSTAR PERFORMANCE (SKU ALL 50743) is a precision weld-on fitting engineered for custom fuel system fabrication, tank modifications, and hydraulic line installations. Designed for fabricators, race teams, and restoration specialists, this aluminum bung serves as a reliable anchor point for fuel lines, breather tubes, or gauge senders in high-performance and street applications. Its natural aluminum finish and robust construction make it an essential component for anyone building or modifying fuel systems where permanent installation is required.

Manufactured to NPT (National Pipe Thread) female specifications at 1/2 inch–14 thread pitch, this weld bung accepts standard NPT male fittings and hose adapters with precise, leak-free engagement. The aluminum construction provides excellent weight savings critical in performance applications while delivering corrosion resistance superior to bare steel. The weld-on design eliminates the need for threaded bosses, allowing fabricators to position the bung anywhere on a tank or tube by welding directly to the metal surface. This flexibility enables custom layouts for fuel pickup tubes, return lines, and vent systems without compromising structural integrity.

This bung is ideal for vintage hot rod builders, drag racing teams, and custom fuel system designers who require dependable, weldable NPT female ports. It pairs seamlessly with standard 1/2 inch NPT male fuel line fittings, hose barbs, and adapter combinations. Installation involves TIG or MIG welding to clean, bare metal surfaces; proper surface preparation and cooling prevent aluminum warping. Weighing just 0.08 pounds, the compact design (4.1 x 0.95 x 7.1 inches) fits into tight engine compartment layouts while maintaining full flow capacity. Fabricators across street rod, racing, and marine industries trust this ALLSTAR PERFORMANCE bung for critical fuel system work.