Free Installation from ADD Automotive     

 When you a purchase an ADD A CAT Shield in Houston, Texas we will install the shield for free. Even if you are planning a road trip to Houston we will still install it for free.

Call and make your appointment today.



We do offer free shipping for everyone outside Houston, Tx.
Ask your favorite car dealer or mechanic for the
ADD A CAT Catalytic Converter Shield.
We can ship directly to them, so they can install it for you. 
Shipping is same day or next day. Allow up to 2-3 days for shipping depending in some areas.


A car is a big investment, no matter what make or model you have. You want to do everything you can to protect that investment, so you’ll be able to get as many miles out of it as possible. These days, a catalytic anti-theft shield is a must-have product for safeguarding your vehicle.

At ADD Automotive, we’re dedicated to helping car owners throughout the U.S. protect their catalytic converters with top-of-the-line anti-theft shields. Drive your car and park it anywhere with peace of mind when you use our products to secure one of your vehicle’s most important parts.