Catalytic Converter Security
Help deter catalytic converter theft with professionally fitted physical protection designed for suitable vehicles.
Protect Your Catalytic Converter
Catalytic converters contain valuable materials and can be targeted because thieves may be able to access the exhaust system quickly. A physical guard or protective solution adds another barrier and can make the vehicle a less attractive target.
We assess the vehicle and available protection before recommending a solution. Fitment varies by make, model, exhaust layout and the products available for that vehicle.
Catalytic converter protection works best as part of a layered approach alongside sensible parking, lighting and other vehicle security measures.
- Cat guards and physical protection for suitable vehicles
- Professional vehicle-specific fitting
- Visible and physical theft deterrence
- Protection for expensive emissions components
- Advice on layered vehicle security
Catalytic converters and the MOT
UK MOT inspection rules include checks for manufacturer-fitted emissions-control equipment. Where required equipment is missing, obviously modified or defective, this can result in a Major defect. Protecting the catalytic converter can therefore help protect both an expensive component and the emissions system the vehicle was designed to retain. Read the official DVSA MOT guidance.


Illustrative security example. Vehicle-specific products and fitment vary; genuine Pro Locks UK installation photos will replace this example as they become available.
Why choose Pro Locks UK?
Physical deterrence
Adds time, noise and difficulty to an attempted catalytic converter theft.
Vehicle-specific advice
We check the vehicle and suitable protection before recommending a product.
Part of layered security
Can be combined with other practical vehicle security upgrades.
Mobile service across the East Midlands
Serving customers across Nottinghamshire, Derbyshire and Leicestershire. Send your vehicle make, model, registration and the service you need for a personalised quote.
Frequently Asked Questions
Does a cat guard make the catalytic converter impossible to steal?
No security product can guarantee theft prevention, but a correctly fitted guard can add a substantial physical deterrent.
Can you fit catalytic converter protection to every vehicle?
No. Product availability and fitment depend on the vehicle and exhaust layout. We will check suitability first.
Why protect the catalytic converter?
Replacement can be expensive and theft can leave the vehicle unusable or in need of exhaust and emissions-system repairs.
Can a missing catalytic converter affect the MOT?
Where manufacturer-fitted emissions-control equipment is required and is missing, obviously modified or defective, the MOT inspection manual can classify this as a Major defect.
