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.
 
This is NOT compatible with the 2024+ model year truck.
 
Some customers report difficulty operating the caps. Please call customer service in case this happens to you.
 
Each Loc-Sure purchase comes with the Loc-Sure cap and one pair of Secure Keys with complimentary stainless steel key ring. The Loc-Sure has natural venting. Additional keys can be purchased using the information from our Secure Keys page.