The catalytic converter is a critical part of your vehicle’s emissions system. When it goes bad, replacing it is unavoidable if you want to pass emissions testing and keep your car running clean. But when it's time to replace it, you might be wondering: Should you do it yourself or have a professional shop handle it?
Is Professional Catalytic Converter Installation Mandatory?
No. No law requires a professional shop to install a catalytic converter. The EPA has outlined specific situations dictating when an aftermarket or replacement catalytic converter must be installed, but who does the work (such as a professional installer) is not mandated. Specifically, you'll have to replace the cat when:
- The original is missing or has been removed
- A state or local authority has determined that it must be replaced
- A legitimate reason is established - such as an expired OEM warranty or damage
Regardless of the installer, the converter must be of the correct type, be installed in the correct location, and be accompanied by a warranty card. Properly functioning OEM catalytic converters are not allowed to be replaced according to federal law.
Should You Get A Professional Shop To Install Your Catalytic Converter?
Because of the rigorous requirements that an installer must follow, many people prefer to use a professional installer.
Pros of Professional Installation:
- Warranty protection: Some brands only honor warranty if a licensed shop installs the part.
- Correct fit and alignment: Shops have lifts and precision tools that make precise installation easier.
- Reduced risk of damaging O2 sensors or exhaust components.
- Faster turnaround, especially for rusted or welded exhausts.
Cons of Professional Installation:
- Higher upfront cost for labor.
- May need to schedule appointments and wait for availability.
If you are uncertain whether your catalytic converter needs replacing, read about the top symptoms to watch for here.
Is It Possible To Install A Catalytic Converter Yourself?
Yes, DIY installation is possible if you have the right tools and experience. However, it isn’t for everyone. If you’re mechanically inclined and have the right tools, it can save money - but mistakes can lead to leaks, check engine lights, and failed emissions tests. Another option is to save money by ordering your replacement catalytic converter online and taking the part to your trusted shop of choice for installation.
If you do decide to attempt installation on your own, be sure to check your state laws about emissions requirements (CARB vs. EPA) and follow all rules and regulation regarding approved cat types for your vehicle.
Install Tips: For direct-fit cats, be sure to verify that the catalytic converter vehicle-specific fitment is right for your make, model, and year. You may also want to have some anti-seize compound handy to treat bolts during installation to make future removal easier. Also, double-check that O2 sensors are reinstalled and connected properly.
Replacement Catalytic Converters From CatalyticConverter.net
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Whether you choose professional installation, or are planning to do it yourself, make sure you get the right catalytic converter for your vehicle the first time. We have a huge selection of direct-fit and universal cats as well as exhaust components covering almost any make and model. Why Choose CatalyticConverter.Net?
- We Have Been Selling Online Since 1996,
- Our Products Are Manufactured In The USA
- Ready-To-Install Converters For Nearly Every Vehicle Make And Model
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Contact our experts for questions about fitment, and order the perfect replacement catalytic converter for your vehicle today!