1.75 Alum.Cap & Steel Bung Assembly

The 1.75 Alum.Cap & Steel Bung Assembly (PN6551) is an essential component for fuel system management and tank venting in automotive applications. This assembly is particularly useful for those building custom fuel systems, performing fuel tank swaps, or upgrading fuel delivery setups. It provides a sealed interface between the fuel tank and vent system, ensuring proper pressure regulation and preventing fuel vapor escape.

Constructed with a 1.75-inch aluminum cap and a steel bung, this assembly combines lightweight design with durability. The aluminum cap offers excellent corrosion resistance, while the steel bung provides the necessary structural integrity to withstand tank pressurization and environmental exposure. This assembly is designed to maintain reliable sealing performance across temperature cycling and vibration.

Ideal for fuel system customization, tank fabrication projects, and fuel cell installations, this bung assembly is compatible with various fuel line routing and vent line configurations. It is particularly beneficial for mechanics and fabricators looking for a reliable solution to replace OEM filler caps or when they are unavailable. Its lightweight nature, at just 0.24 lbs, ensures that it adds minimal mass to your fuel system.