Customer Reviews
Overall rating: 5.0 / 5 from 23 reviews.
Fit and look fantastic
Rick T.
5/5
Verified
May 29, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Love it. Don't judge about me putting the DEF upside down. Noticed after the Pic was taken
Patrick W.
5/5
Verified
August 3, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Perfect fit, would expect nothing less from Banks!!
Richard M.
5/5
Verified
June 19, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Fit perfectly, I love how they have the magnet for keeping the cap secured away while filling up.
Oran K.
5/5
Verified
May 17, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Awesome
Scott C.
5/5
Verified
November 6, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Delivery from Dirty Diesel Custom was super quick and the Banks Power fuel caps fit perfectly. No more worrying about snow plugging it up
Cheyeanne P.
5/5
Verified
March 10, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
I replaced a different brand cap with this one. This one is easier to twist and remove when fueling.
Jordan A.
4/5
Verified
February 19, 2026
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Great product, good shipping times!
Jean-francois T.
5/5
Verified
August 10, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Parts fit perfect! Fast delivery
Joanne S.
5/5
Verified
July 30, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Nice fit, will keep shit out of your fuel tank
Ryan P.
5/5
Verified
March 14, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Perfect fit and exactly what I needed
Daniel H.
5/5
Verified
July 9, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Keeps the dirt out and looks great.
Scott C.
5/5
Verified
April 6, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Fits perfect on my 2025 ram 2500
Rodney E.
5/5
Verified
January 1, 2026
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Looks great
Jessy R.
5/5
Verified
January 19, 2026
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Very easy to use -Great product 👍👍👍
Troy W.
5/5
Verified
January 17, 2026
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Fits good and looks good
Sean K.
5/5
Verified
February 25, 2026
2019-2026 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Fits perfect
Darren F.
5/5
Verified
December 21, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Very Happy! Don't have anything but great things to say for all the staff at Dirty Diesel.
Denise S.
5/5
Verified
November 23, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
Fit perfect and they lock in tightly
Conrad E.
5/5
Verified
July 19, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
The parks fit good and was cheaper then the banks website
Patrick H.
5/5
Verified
July 8, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
They work awesome
Ryan K.
5/5
Verified
June 2, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
A beautiful look and tight fit.
Ferdi D.
5/5
Verified
April 5, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)
They fit perfectly and help keep the water out
William A.
5/5
Verified
March 26, 2025
2019-2024 Cummins/ EcoDiesel Revolver Billet Fuel & DEF Caps (66700)