• 3 Catlock models to fit all your converter security needs!





  • #1 rated converter lock on Amazon!


    Includes Catlock Key and Converter Etching Kit!




  • 4+ stars on Amazon!


    The best permanent locking solution!



  • The original Catlock!


    Only converter lock under $100 ANYWHERE!




  • Track Your Converter with a Unique ID


    Free with purchase of a Catlock 3.0!






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 new 3.0) are the simplest, fastest to install and most effective catalytic converter security locks on the market. As an additional lawyer of protection we sell a catalytic converter security marking kit, allowing your converter to traced 24/7, which come free with The Catlock 3.0.

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


Phoenix Chamber of Commerce

Features of all 3 Catlock models:

  • Prevent converter 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 all Light Duty 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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