Fits 2021-2022 FORD Superduty trucks with the Powerstroke Diesel engines. This diesel cap fits the 2020 Ford trucks with the “spin-off” or multi-turn diesel caps. This cap also fits the 2023 Ford trucks with diesel pipes which are bare stainless steel inside.
CHECK CAREFULLY!
This is NOT compatible with the F150s, earlier model year trucks with the 1/4-turn style caps, or the 2023+ trucks with the diesel pipes painted black inside. If you purchase in error, please call to arrange an exchange.
Please review the locking DEF cap in case you need more information. If you are looking purchase both caps at the same time in a set, please review the Loc-Sure/Spin-Loc Combo for this series.
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.
Reviews
These fuel caps were recommended by a neighbor. Picking the correct model was easy. The caps are expensive but are very well
made. They fit our F550 perfectly, even the aux fuel tank and cannot be removed once locked on. Our truck has a custom trick bed and the fuel and DEF caps are not
enclosed. If your rig is outside and you live or park in an urban environment I highly recommended these
caps.