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20mm Petcock Bung
20MMPK$9.0020mm Petcock Weld-In Bung – 1018 Mild Steel (Triumph, BMW, Euro Style) This 20mm petcock bung is precision-machined from solid 1018 cold rolled mild steel and features a < -
Weld in Filler Bung
FB$14.50 - $17.50These are our weld in filler bungs, used with all of our vented and non vented caps. 1 1/4" x 12 thread 1 3/4" flange OD 1 1/2" stepped down OD Available in Mild Steel, Aluminum, or Stainless Steel... -
Filler Cap and Bung
FCwB$25.75 - $29.75Filler Cap and Bung Filler Cap and bung these are most commonly used for oil tanks or any other fluid container such as an overflow tank that does not need to be vented. We make a vented version of... -
Steel NPT Bungs
NPT 83$3.00 - $5.501018 Mild Steel NPT Weld-In Bungs – Multiple Sizes Available These NPT weld-in bungs are precision-machined from solid 1018 cold rolled mild steel bar stock, then drilled -
Tall Filler Bung
TFB$13.75 - $14.75This is a different version of our ever popular filler bungs, these weld filler bungs are taller than our standard flanged ones for those who would like to stand the filler neck off of your tank a...
Description
22mm Petcock Weld-In Bungs – 1018 Mild Steel (Short & Long Options)
These 22mm weld-in petcock bungs are machined from solid 1018 cold rolled mild steel and tapped to accept standard 22mm x 1.0 thread motorcycle petcocks—perfect for custom gas tank fabrication or OEM-style replacements.
Offered in two lengths, these bungs are designed to suit a wide range of builds:
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Short version: Matches the typical factory-style installation found on many OEM gas tanks. Ideal for welding directly to the tank bottom.
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Long 2" version: Gives you extra material to trim at an angle for a side-mounted petcock, commonly used on Frisco-style tanks and high-mount chopper designs.
Whether you're building a new fuel system or retrofitting a tank, these bungs deliver precision fitment and solid weldability.
SOLD EACH
Specifications:
| Length Option | Thread | Material | Outer Diameter | Use Case |
|---|---|---|---|---|
| Standard | 22mm x 1.0 | 1018 Cold Rolled Steel | 1" | Bottom-mount (OEM-style tanks) |
| Long (2") | 22mm x 1.0 | 1018 Cold Rolled Steel | 1" | Side-mount (Frisco-style tanks) |
Key Features:
Precision-machined from 1018 cold rolled mild steel for excellent weldability
Compatible with most 22mm motorcycle petcocks including many Harley-Davidson models
Short version for factory-style bottom tank mounting
Long 2” version ideal for angle-cutting and side-mounting in custom builds
Perfect for custom gas tanks, choppers, Bobbers, Frisco tanks, and vintage restorations