Overview

Speedflow 460 Series Filler Caps and Weld Bung Assemblies

Speedflow 460 Series filler cap and weld bung assemblies are high-quality, non-vented cap systems, popular in performance automotive and fabrication. They feature an ergonomic, hand-tightened aluminum cap with an internal O-ring for a secure seal, paired with a matching weldable bung (neck) for custom tanks, oil fillers, valve covers, fuel cells, and other specialty applications. These components are known for their durability and design that's been replicated worldwide. Choose from raw or black hard-anodized.

Key components and features:

* Filler cap: Made from 6061-T6 billet aluminum and has finger grips for easy operation
* Weld bung: A matching stainless steel threaded neck that gets welded onto a tank, designed to precisely fit the cap
* Internal O-ring: Provides a reliable, leak-free seal when the cap is tightened by hand, eliminating the need for complex venting systems

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