Brass Filler Cap with Tall Bung

Brass Filler Cap with Tall Weld-In Filler Neck – Vented or Non-Vented

Add classic style and versatility to your custom build with this Brass Filler Cap and Tall Weld-In Filler Neck. Ideal for oil tanks, gas tanks, or any steel or aluminum fluid container, this kit gives you flexibility in both function and appearance.

The kit includes a solid brass cap available in your choice of vented or non-vented versions. It threads into a tall 1.25" x 12 threaded weld-in bung, available in either mild steel or 6061 aluminum to match your fabrication needs. The taller neck (1.25" height) provides more clearance and can be cut down for a custom fit or left tall for a standout look.

Each cap features a replaceable O-ring for a reliable, leak-free seal, making this setup both durable and easy to maintain.

Product Features:

Cap Material: Solid 360 Brass

Cap Options: Choose vented or non-vented

Bung Material Options: Mild Steel or 6061 Aluminum

Thread Size: 1.25"-12

Bung Dimensions: 1-5/8" O.D., 1.25" overall height

Customizable height – bung can be cut to fit your tank

Leak-free O-ring seal included and replaceable

Weld-in design for permanent installation

Made in the USA

Perfect for custom motorcycle builds, hot rods, or fabrication projects where a vintage brass aesthetic meets modern functionality.