Filler Cap Red with Weld-In Alum Bung Large

The Filler Cap Red with Weld-In Alum Bung Large from ALLSTAR PERFORMANCE is a professional-grade fuel tank filler assembly designed for custom automotive builds, race vehicles, and restoration projects. This kit combines a 3.000-inch outer diameter aluminum bung with a color-matched red anodized threaded cap, offering a complete welded solution for fabricators and engine builders who demand reliability and clean aesthetics. Whether you're constructing a street rod, competition vehicle, or vintage restoration, this weld-on system provides a permanent, leak-proof fuel tank opening that integrates seamlessly into custom fabrication work.

The bung is engineered for permanent installation via welding, ensuring maximum structural integrity and vibration resistance once fused to your fuel tank. The aluminum construction delivers lightweight strength while the red anodized finish provides corrosion resistance and a polished appearance that complements modern and classic builds alike. The aluminum threaded cap is precision-engineered to seal tightly, preventing fuel vapor loss and contamination during operation. This design eliminates the need for aftermarket filler necks, allowing fabricators to maintain clean lines and custom tank configurations while maintaining OEM-level sealing performance.

This kit is ideal for hot rod builders, race teams, and restoration specialists working on fuel tanks with 3.000-inch diameter openings. The weld-on design is compatible with both steel and aluminum tanks, provided proper welding procedures are followed for the respective material. Installation requires welding equipment and fabrication experience; once properly installed, the assembly delivers a factory-quality appearance with custom-built durability. The large size accommodates standard fuel pump inlet configurations, making it suitable for both carbureted and fuel-injected applications across a broad range of automotive projects.