Aluminum Weld Bung -12AN Female

The Vibrant Performance Aluminum Weld Bung -12AN Female (VIB11164) is a purpose-built weld-on fitting designed for custom fuel system, coolant, and fluid line applications in high-performance automotive builds. This aluminum bung provides a secure, permanent connection point for 12AN hose ends and accommodates flexible or rigid tubing systems in engine bays where direct welding to the block or custom manifolds is required.

Manufactured from aluminum, this weld bung features a 1-3/8-inch outside diameter and female 12AN threading designed to accept standard AN-spec hose fittings and adapters. The weld-on design eliminates the need for threaded holes or existing ports, making it ideal for fabricators working with custom-built fuel rails, remote oil filters, and turbo supply lines. Aluminum construction offers weight savings compared to steel alternatives while maintaining adequate strength for standard automotive fluid pressures, though builders should verify material compatibility with their specific fluid type and operating pressure range.

This fitting is essential for engine builders, fabricators, and enthusiasts assembling custom cooling systems, fuel delivery setups, and auxiliary fluid circuits on performance and race vehicles. The 12AN female connection is a common standard in aftermarket automotive plumbing, ensuring broad compatibility with commercially available hose ends, adapters, and fittings. Whether installing remote fuel surge tanks, custom water bypass circuits, or turbocharger feed lines, this weld bung provides a reliable mounting point where factory provisions do not exist.