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Bolt-On Fuel Cell Aluminum Fill Cap Bung

SKU C73-712
Bung Bolt Pattern and Cap Size
Color
Regular price $64.99

Spend $175 to get free shipping
Crafted-in-USA Stiletto Replacement Boot and Wire Kit 2-1 4 Inch OD x 1-1 2 Inch ID: 9 Peaks: Dwarf Mod-lite Rack N Pinions

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6 Bolt Fuel Cell Bung with 2-3/4 Inch Fill Cap
2-1/4-10 Straight Thread
3/4 in. Bung Height
6 on 4.438 in. Dia. Bolt Circle
Fits 2-3/4 in. Easy Turn Fill Cap

12 Bolt Fuel Cell Bung with 4-1/4 Inch Fill Cap
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Bolt-on Fuel Cell Bungs


Pro-werks Fill Cap Bungs are available separately without the cap. These bolt-on style aluminum bungs come in several types and sizes, and do not require welding. Select anodized colors are available and include mounting hardware - so you won't need to run all over town looking for it!

Properly sized  for the "radially squeezed" O-ring standard of the signature Pro-werks Easy Turn Fill Cap.

The selection of weld-able bungs is also available; including several different heights in your choice of Steel, Aluminum or Stainless steel materials.

Note: Welding should always be performed by a qualified welder.


Great caps. Great colors.


These bungs utilize the popular non-vented Easy Turn Fill Caps that are available variety of Pro-Werks Brilliance anodized colors or beautifully Micro-polished aluminum finish - the finishes are impeccable.


The right size matters.


Easy Turn Fill Caps come in many sizes and are packaged as complete assemblies with your choice of one of the many versatile mounting options, or each component is also available separately.


Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-Werks specialty.   


Both the Cap and Bung are precision CNC machined from billet aluminum.

Finish Your Tank

We also offer a full line of weld plumbing bungs to complete your tank project.

Click the images below to view all the options.

  

FAQs
Q: How much do I need to tighten a fill cap?
A: It is not necessary to bottom the fill cap into the bung−just adequately seat the O-ring. The radial squeeze action on the O-ring creates a positive seal and helps prevent the cap from coming loose.

Q: What should I use to lubricate the Buna O-ring?
A: Applied periodically, a light coating of Dielectric grease has proven to work well as an O-ring lubricant.

Q: Is Buna rubber compatible with my fluid?
A: Buna is a synthetic rubber compound suitable for use with most fluids. Buna components may need to be replaced by a material compatible with the specific chemistry of some fluids.

Q: How do I properly weld my bung?
A: Apply several small, equally spaced tacks and preheat before welding. Keep the weld small to minimize potential distortion or shrinkage.

Q: If my threads are tight after welding, how do I fix it?
A: The solution is simple. Apply a small amount of fine grit lapping compound to the threads then turn the cap back and forth in the bung until the desired fit is achieved. Be patient−do not force the process. Thoroughly clean both sets of threads before use.
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