New 3.0!

The Catlock® 3.0  

Universal fit catalytic converter lock


Catlock - Engineered for maximum protection against catalytic converter theft.


(The Catlock® 3.0 stand-alone)

Welcome to cat-lock.com!

We are the leading catalytic converter theft solutions company in the U.S. offering the widest variety of products to address the catalytic converter security needs of individual consumers and business fleets.


Our patented and trademarked family of Catlocks (1.0, 2.0 and the brand new 3.0) are the simplest, fastest to install and most effective security locks on the market. Additionally, we sell a catalytic converter marking kit, allowing your converter to traced 24/7. The kits can also be used to trace third row seats in SUVs.

Thank you in advance for choosing the Catlock, if you have any questions about our products, don't hesitate to reach out to us using the contact info below.


Phoenix Chamber of Commerce

The Catlock® 2.0

Universal fit catalytic converter lock


Catlock - Engineered for maximum protection against catalytic converter theft.


(The Catlock® 2.0 locked to a catalytic converter)

Features of all 3 Catlock models:

  • Prevent theft by locking catalytic converter to vehicle frame
  • Patented, best-in-class converter lock design (U.S. Patent No. 8,002,232)
  • Fastest installation of any converter lock - 10 minutes with no special tools
  • Powder-coated plates & zinc-coated hardware for protection against rust
  • Will not affect vehicle's operation, overheat or crush the converter
  • Fully adjustable to fit 99% of automobile catalytic converters
  • Strong visual deterrent
  • No drilling or welding
  • Money-back guarantee
  • 100% Made in the USA
  • For more information, visit The Catlock® FAQs
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