FTA-C-97 Locking Diesel Fuel Cap, 1 Cap
Vented caps designed with pressure relief. Safety chain and crossbar included. One CapDescription: Female, Vented, LockingAcross Threads (Cap): 3-3/8 Inches Threads: 5-1/2 Per Inch Finish: AluminumApplication: Kenworth or any truck with diesel fuel tanks with 3-3/8" filler necks.Heavy Duty Locking Cam.
Picture shows inside and out. This is one cap.
For Anti-Siphon Tube use FTA-25-7, do not use in combination with a locking fuel cap.
The FTA-C-97 Locking Diesel fuel cap is designed to work on a 3-3/8" fill necks. Use the key to unlock the cap (the key won't come out when it is unlocked) then screw the cap onto the filler neck and turn the key to lock it. When you turn the key the cam will hit the side wall of the fill neck and bite in. It is very important not to over tighten the cap... Do not over tighten the cap when you screw it on.