Owners looking for catalytic converter protection have several options available. Choosing the best catalytic converter shield for a 4Runner means looking beyond price and comparing coverage, materials, security hardware, installation and overall design.
A well-designed catalytic converter shield creates a physical barrier that makes the catalytic converters more difficult and time-consuming to access.
Why Protect a 4Runner Catalytic Converter?
The ground clearance provides convenient access underneath the vehicle. That is useful off-road, but it can also make portions of the exhaust system easier to reach.
Installing a vehicle-specific catalytic converter shield adds another layer of protection between the converters and someone attempting to remove them.
No catalytic converter shield can guarantee that a theft attempt will never occur. Its purpose is to make access substantially more difficult.
What Should You Look for in a Catalytic Converter Shield?
When comparing shields, consider the construction, coverage and how the shield attaches to the vehicle.
ADD A CAT Catalytic Converter Shields feature:
- 3/32-inch 5052 marine-grade aluminum
- One-piece design
- Louvers for optimum ventilation
- Proprietary security bolts
- Security bit included with every hardware kit
- Bolt-on installation with no drilling required
- Approximately 20-minute installation
Vehicle-specific engineering is also important. A shield designed for the correct 4Runner model year and configuration provides a better solution than relying on a universal theft-deterrent product.
ADD A CAT Protection
ADD Automotive manufactures ADD A CAT Catalytic Converter Shields for compatible Toyota 4Runner applications.
ADD A CAT shields include a 1-year warranty with a full-refund guarantee if the catalytic converter is stolen while the shield is properly installed, subject to warranty terms.
Customers in the Houston area can also receive free installation with the purchase of an ADD A CAT shield. For installations, payment is collected at the time of installation, so there is no need to order the shield beforehand.
Protect Your 4Runner
If catalytic converter theft is a concern, compare protection based on coverage, construction, security hardware, fitment and installation rather than price alone.




