ATI Locking Auxiliary Fuel Tank Cap
Price: $29.00
Protect your fuel investment with the ATI Locking Auxiliary Fuel Tank Cap. Designed specifically for ATI Auxiliary Tanks, this locking cap provides essential security against theft, contamination, and unauthorized access to your diesel fuel supply. Whether your truck is parked overnight at a job site or stored in a fleet yard, this cap ensures that only authorized personnel can access your tank—giving you peace of mind and protecting your operational fuel budget.
Key Features
- Integrated Locking Mechanism – Built-in key lock prevents unauthorized removal and access to your fuel tank.
- Complete Security Kit – Includes cap and key for immediate installation and use.
- Designed for ATI Auxiliary Tanks – Precision-fit for ATI-brand auxiliary fuel transfer tanks, ensuring a proper seal and reliable performance.
- Durable Construction – Built to withstand the demands of fleet, construction, and agricultural environments.
- Simple Installation – Direct replacement for your existing cap; no modifications required.
Specifications
- Product: Locking Auxiliary Fuel Tank Cap
- Brand: ATI
- Type: Locking tank cap with key
- Compatibility: ATI Auxiliary Tanks
- Function: Provides protection and security for ATI auxiliary fuel tanks
- Price: $29.00
Why Choose ATI Locking Auxiliary Fuel Tank Cap
Fuel theft is a real cost for fleet operators, construction crews, and agricultural operations. A simple, unsecured fuel cap leaves your diesel vulnerable to siphoning and contamination. The ATI Locking Auxiliary Fuel Tank Cap eliminates that risk with a straightforward, effective solution.
As a precision-fit component designed specifically for ATI auxiliary tanks, this cap delivers a reliable seal and secure lock every time. No guesswork, no adapters, no compatibility concerns. It installs in seconds and provides year-round protection against unauthorized access, weather, and debris.
At just $29, this locking cap is one of the most cost-effective security upgrades you can make for your fuel system. Compared to the cost of a single tank of stolen diesel, it pays for itself the first time it prevents theft.
Every product on Tank Vault is vetted for build quality, real-world performance, and warranty support. If it doesn’t meet our standards, it doesn’t make the cut. The ATI Locking Auxiliary Fuel Tank Cap meets those standards—delivering the security and reliability your operation requires.
Order yours today and secure your fuel supply with a cap built to perform.


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