Tank Warden™ for ’11-22 Ford Super Duty Diesel Trucks – ETA: Jul/Aug

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SKU: Tank Warden Category:


Tank Warden is our industry-leading, USA made, locking cap kit that protects your investment and prevents bystanders from contaminating or pumping out your Diesel fuel and DEF.

Each cap incorporates a highly manipulation resistant, quarter-turn lock cylinder that is prominently used in the casino industry. We opted to choose a lock that doesn’t use a wafer or tubular design, because those designs are insecure. Other locking caps require a cumbersome lock and unlock process and don’t utilize a real key and lock cylinder.

The caps incorporate a special design we developed and are incredibly easy to use. We even include a cap holder; no more messing with tethers! Unlike other locking caps that are fiddly to use, you will find ours a joy to use.

Kit Contents

  • Three keyed-alike keys. One for you, your spouse, and a spare!
  • One green anodized, laser engraved, Diesel fuel locking cap
  • One blue anodized, laser engraved, DEF locking cap
  • Laser sintered black Nylon cap holder

2011-2022 Diesel trucks only. Not designed for cab and chassis trucks. Designed for trucks that have the OEM large, rectangular fuel door/pocket with the two filler necks located within.

Each kit is keyed unique from other kits, and therefore multiple kits within the same order cannot be keyed alike for multiple trucks, such as fleets.

Ford and Super Duty are registered trademarks of the Ford Motor Company. Subtle Design has no affiliation with Ford or its partner companies.


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