Polished Alum Fill Cap w/ Alum Welld Bung 2.75i

The Polished Alum Fill Cap w/ Alum Welld Bung 2.75in from Vibrant Performance is a precision-engineered radiator cap assembly designed for use in custom cooling systems and high-performance engine builds. This component is essential for automotive enthusiasts who require both reliability and a polished aesthetic in their engine bay.

Constructed from aircraft-grade aluminum with a mirror-polished finish, this cap features a welded aluminum bung that ensures a secure, leak-free seal under pressure. The polished exterior resists corrosion, maintaining its appearance even in demanding engine compartments, while the precision-welded bung provides structural integrity during thermal cycling or high-temperature operation.

This 2.75-inch diameter cap is compatible with most aftermarket cooling components, making it ideal for fabricators, restoration shops, and performance builders working on custom radiator and overflow tank applications.