VersaLock Vented Locking Fuel Tank Cap Review

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The VersaLock Vented Locking Fuel Tank Cap by Flow Security Systems is a reliable and secure solution for safeguarding fuel and oil from theft, tampering, siphoning, and vandalism. This review will provide an in-depth analysis of the product’s features, benefits, and drawbacks based on existing customer feedback.


  • Prevents Unauthorized Use: The VersaLock utilizes patented free-spinning design to secure transfer fuel tanks, making it an ideal choice for business owners looking to protect their valuable fuel.
  • Multiple Use: Designed for mobile fuel transfer tanks and above-ground commercial gas and distillate tanks, the VersaLock features a weatherproof self-closing latch to prevent dust, dirt, debris, and moisture from entering the lock.
  • Keyed Differently or the Same: The VersaLock can be keyed alike for convenience or keyed differently for added security, providing flexibility for users with multiple transfer tanks.
  • Built-in Valve: Equipped with built-in valves to equalize pressure and vacuum, the FSS-754 uses a heavy-duty lock made from a hard non-ferrous alloy and fits standard 2-inch male threads.
  • Patented Design: The VersaLock stands out with its patented free-spinning technology, offering a unique and effective locking mechanism.


  • Easy Installation: Customers reported that the installation process was quick and straightforward, taking only a few minutes.
  • Secure Locking Mechanism: The locking mechanism was praised for its effectiveness and durability, providing peace of mind for users.
  • Quality Build: The product’s construction and finish were commended, with users noting its weight and resilience.
  • Responsive Customer Service: Customers appreciated the company’s responsiveness in resolving issues and answering questions.
  • Durable: Many users expressed confidence in the product’s longevity, citing its robust build and reliable performance.


  • Vent Issues: Some users experienced problems with the vents, including issues with air flow and water ingress, particularly during washing.
  • Lock Mechanism Durability: A few customers reported issues with the lock mechanism breaking after a short period of use, raising concerns about long-term durability.
  • Fitment: A couple of users encountered fitment issues, emphasizing the importance of carefully reviewing the product description before purchase.

In conclusion, the VersaLock Vented Locking Fuel Tank Cap offers a high level of security and convenience for protecting fuel tanks. While it boasts a robust design, effective locking mechanism, and responsive customer service, there are some concerns regarding vent functionality, lock durability, and fitment. Potential buyers should weigh these factors against the product’s strengths to make an informed decision.

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