Filler Cap Red with Weld-In Alum Bung Small

The Allstar Performance Filler Cap Red with Weld-In Aluminum Bung Small is a precision-engineered component designed for custom fuel system fabrication and engine bay modifications. This small-format filler cap assembly serves racers, hot rodders, and performance builders who need reliable fuel access points on custom tanks or aftermarket fuel cells.

The red powder-coated cap provides high visibility in the engine compartment, while the weld-in aluminum bung allows permanent integration into custom fuel tank designs. Constructed from lightweight aluminum, this bung is engineered to withstand the structural demands of welded fuel tank installations while maintaining dimensional stability under thermal stress.

This component is ideal for compact fuel tank builds, tighter engine bay layouts, or specialized applications where a full-size filler opening would be impractical. The weld-in design eliminates potential leak points associated with threaded connections, creating a sealed fuel access system that won't loosen or vibrate free during aggressive driving or racing conditions.