Plymouth Air Shield/ Stone Shield

Trusted by Toyota, Lexus, Dodge/Ram, Ford, Chevrolet, GMC Dealers & Fleets

The only award winning Shield Manufactured in the U.S.A.

Our shields are designed by an actual master tech for vehicles. We have never had a single theft of catalytic converters in 4 years of business. We are trusted by Toyota, Dodge, Chevrolet and Ford dealerships, as well as, Fleets. We also have our own proprietary security bolts that come standard with the shields at no cost to the customer! We use Aluminum because it gums up a blade, on the sawzall, and becomes a melted mess on the blade and the shield. We have seen a couple tries of thieves trying to get through the shields with a sawzall and they gave up. One of our dealers who preloads new vehicles with our shields had a thief try to cut, crowbar, anything they possibly could to get the shield off. Theyt couldn't do it. The thieves got so mad they destroyed the actual truck, but it still had its CATs. We are so confident in our product that we offer 100% MONEY BACK GUARANTEE if our product fails in keeping your Catalytic Converters Safe. Trust ADD Automotive to be there for you always.

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all add a cat Shield orders ship same day, or next day.

Never a Delay. No Lead Times.

ADD Automotive always answers the phone and emails are responded to quickly. Your days of waiting for someone to return your call are over.

You are important to us. You come first.

INSURANCE DISCOUNT

Did you know when you purchase a Catalytic Converter Shield, you could receive up to 15% off your insurance policy.

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ADD Automotive/ Add a cat

Catalytic Converter Shields for Toyota, Lexus, Ford, Dodge/Ram, Chevrolet, GMC, Isuzu

Here at ADD Automotive, we’ve been in the automotive catalytic converter shield business for the last 4 years. We manufacture and sell corrosion-resistant, durable Catalytic Converter Shields ADD Automotive. Our fully custom-designed product will not void your vehicle’s warranty and does not require any parts modification for installation. We also provide fully custom, American-made, proprietary security bolt fasteners when you purchase a shield. It also functions as a skid plate for your vehicle.

These are available in certain models of Toyota, Lexus, Ford, Chevy, Ram, GMC, and Isuzu. They are made of a high-grade aluminum that works to both dissipate heat and resist corrosion. The shield can end up paying for itself in the long term, as it can get you a discount on your monthly car insurance rate. In 4 years of business, no thief has been able to get through our shields to steal our customer’s converter.

You can order online or call ADD Automotive for a quote at 281-608-2894. We can send them to you anywhere in the United States. Installing the shield should take you less than 30 minutes. Just place the adhesive rubber bumper in a suitable location and tighten the security bolts.

You can stop in to have them installed at our Kingwood, Texas location any day from 7:30 a.m. to 5 p.m. or at our Downtown Houston location Monday to Friday from 8 a.m. to 2 p.m. Please make an appointment before visiting either location.

Insurance Discounts

Did you realize that once you purchase a shield and get it installed you can take your receipt of your purchase to your insurance company and receive a discount on your auto insurance? Make sure to tell the insurance company you now have a shield protecting your converters and they will give you that discount.

Call for a Quote

We offer protectors for many models from 2003 to 2025. Contact us today at 281-608-2894 to get a quote.

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