Bolt-On Fuel Cell Aluminum Filler Cap Bung
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Bolt-on Fuel Cell Bungs
Pro-werks Fuel Cell type Filler Cap Bungs are available separately without the cap. These bolt-on style aluminum bungs come in two 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!
Great Caps. Great Colors.
The Right Size Matters
Proudly Made in the USA
Both the cap and bung are precision CNC machined light weight billet aluminum, right here in the USA.
Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-werks specialty.
You can always count on Pro-Werks to do it right!
Customer Comments:
"I use your bolt on caps and bungs on my carbon fiber Cummins common rail valve covers. Love the quality. Thank you."– Randy Davis, Owner of OldSkoolFab, Inc.
"I upgraded my fuel cell to an Easy Turn fill cap assembly. It wasn't long until all my friends did the same. Great product!"
– As shared with us at the PRI Show
Frequently Asked Questions
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 many fluids. Buna components may need to be replaced by a material compatible with the specific chemistry of some fluids.