Description
A quality filler cap and bung assembly is essential for any custom fuel system, coolant circuit, or overflow tank—it ensures a sealed, professional finish while preventing fluid loss and contamination. The Allstar Performance weld-in bung provides a permanent, leak-free mounting solution, while the polished aluminum cap delivers both durability and a clean aesthetic. This complete kit eliminates the guesswork of sourcing matched components separately.
- 3.000 in OD
- Weld-on aluminum bung
- Aluminum threaded cap
- Polished anodized finish
- Complete bung and cap kit
- Permanent installation method
- Professional-grade construction









