Easy Turn Fill Caps
Turn heads while working on your race car with Pro-werks’ signature Easy Turn Fill Caps. Once you add these best-looking components, you may find yourself checking fluids more often, just to get your hands on the caps again!
These lightweight, non vented Pro-werks Fill Caps feature deep finger notches for a positive and comfortable grip. The 6061-T6 American melt billet aluminum is CNC machined for accuracy, and is available in your choice of either brilliance anodized black, red, blue, or silver, as well as micro-polished aluminum finish.
Our design uses a radial squeeze action on a Buna O-ring for a secure seal. Precision machined quick-start coarse threads make using our caps a breeze.
Pro-werks’ mounting bungs are crafted from steel, aluminum or stainless and available in both weld-in and bolt-on styles.
Easy Turn Fill Caps are available many sizes and mounting configurations to fit almost any application.Popular uses for Easy Turn Fill Caps include:
- Custom-fabricated tanks
- Fuel cells
- Rear End housings
- Valve covers
- Overflow tanks
- Ice boxes for intercoolers
- Ballast tanks
- Inspection viewing ports
Proudly Made in the USA."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 by 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