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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 < -
Stepped NPT bungs
SNPT$4.25 - $8.001018 Mild Steel NPT Weld-In Bungs – Multiple Thread Sizes Available These weld-in NPT threaded bungs are precision-machined from solid 1018 cold rolled mild steel round stock -
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 - $29.75Non-Vented Filler Cap & Bung Kit – 1.25"-12 Thread, Compact Design The non-vented filler cap and bung kit is a compact and clean solution for gas tanks, oil tanks, and fluid reservoirs where... -
Tall Filler Bung
TFB$13.75 - $14.75Tall Weld-In Filler Bung – 1.25"-12 Thread, Mild Steel This tall weld-in filler bung is a modified version of our popular flanged filler bungs, designed for builders who want a bit more height on...
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
