AN Weld Bung 12AN Female Aluminum

The AN Weld Bung 12AN Female Aluminum from ALLSTAR PERFORMANCE is an essential component for custom fuel system builds, nitrous oxide plumbing, and high-flow hydraulic line installations. This weld bung serves as a permanent mounting point where braided hoses, fuel rails, or distribution blocks connect to your vehicle's custom fabrication work. Whether you're building a street performance engine, carbureted hot rod, or EFI conversion, this adapter allows you to integrate standardized AN fittings directly into welded aluminum components with clean, leak-free results.

Constructed from lightweight aluminum, the 12AN Female Weld Bung is designed to be permanently affixed to fuel tanks, manifolds, or custom-fabricated brackets before final assembly and pressure testing. The female 12AN port accepts standard 12AN male fittings and hose ends, providing a vibration-resistant connection point that won't loosen during engine operation or hard acceleration. The aluminum construction minimizes weight while offering excellent corrosion resistance and thermal stability in high-heat engine compartments. This design eliminates the need for bulky tapped ports and allows fabricators to position fuel or fluid lines exactly where space constraints or aerodynamics demand them.

Serious engine builders and fabricators rely on this weld bung for fuel cell installations, custom intake manifolds, and remote oil cooler setups where threaded ports aren't practical or available. The compact 4 x 1.05 x 7.05-inch profile fits tight quarters typical of modern engine bays, and the durable aluminum withstands repeated thermal cycling without cracking or degradation. Installation requires TIG or MIG welding to an aluminum or steel substrate; ensure proper heat management to avoid distortion of the bung body. Compatible with all standard 12AN hose ends, fittings, and adapters, making this a versatile choice for race cars, restorations, and custom performance platforms across domestic and import platforms.