AN Weld Bung 4AN Female Aluminum

The AN Weld Bung 4AN Female Aluminum from ALLSTAR PERFORMANCE is a precision fuel system component designed for custom fabrication and high-performance engine builds. This weld bung serves as a sealed port in custom-built fuel rails, surge tanks, and distribution blocks, providing a clean, professional way to cap unused ports while maintaining system integrity.

Constructed from lightweight aluminum, this weld bung is engineered for permanent installation through TIG or MIG welding directly into your custom fuel system components. The 4AN female port accepts standard 4AN hose fittings, allowing for future modifications if system design changes post-fabrication. Aluminum construction keeps overall system weight minimal, which is critical for performance and racing applications.

Fabricators, engine builders, and custom fuel system designers rely on this weld bung for street rods, drag racing platforms, and high-displacement engine conversions. Its design ensures a flush, leak-free seal when properly installed and secured with appropriate male 4AN adapters or fittings, making it an essential component for any serious automotive project.