Fits 2023 FORD Superduty trucks with the Powerstroke Diesel engines with diesel pipes as pictured (painted black inside). If your 2023 model Powerstroke diesel truck has a bare stainless steel diesel filler pipe, you will need to order the set we sell for the 2021-22 model year Powerstroke trucks. CHECK CAREFULLY!
This is NOT compatible with the F150s or earlier model year trucks.
There is select forward compatibility with the 2024-2025 model years; some trucks are compatible with the kits out of the bag, some need a seal kit for the diesel caps. If you want to install this on your 2024-2025 Ford, please include the seal kit with your order.
Some customers report difficulty operating the caps. Please call customer service in case this happens to you.
Get a deal by buying both a Loc-Sure and a Spin-Loc at the same time! Each combo purchase comes with the Loc-Sure cap, the Spin-Loc cap and one pair of Secure Keys with complimentary stainless steel key ring. Both caps have natural venting. Additional keys can be purchased using the information from our Secure Keys page.
Reviews
Purchased the pair for my truck to secure this area, with the optional medium gasket, they fit like a glove, nice and tight and solid protection.
Purchased both caps and the optional O ring kit. I had to swap out the O-ring on the Diesel cap. Very happy with the caps.
Not what I expected and a bit clunky to use. Installed on a 2024 Super duty. I did have to use a smaller o ring as suggested so be sure to purchase that for the 2024. It would be helpful to put an index mark on the cap to show location of the locking pin as it must line up with one of three recesses in the filler neck threads. Also be very careful as the smaller O-ring comes off very easily and could get lost or worse drop in tank. The o ring kit should include multiples of each for spares
I had some troubles with the first cap, they sent a replacement right away. Thank you.