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What is the Catalyst Sticker

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What is the Catalyst Sticker

Created on: 2017-05-12

Key information you need to understand the catalyst sticker on any vehicle

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Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at, your trusted source for quality auto parts.

Your vehicle’s catalyst is a sticker located underneath the vehicle's hood, on the air box, or sometimes up on the radiator support at the front of the engine bay, and it has a lot of useful information on it. Some of the things you'll find is whether it's a California emission, or a federal emission vehicle. Just because your vehicle is not in California doesn't mean it can't be a California emissions spec. You'll also find the year of the vehicle. It's applicable to the 2006 model year, so our vehicle is a 2006.

These abbreviations here cover some of the emission's equipment on the vehicle. TWC is three way catalytic converter. HO2S is a heated O2, or oxygen sensor, and SFI means this vehicle has sequential multi-port fuel injection. You can also find things like your spark plug gap, and valve adjustment if required, and it isn't on this vehicle. We'll also find our engine size, 4.6 liter. So if you're looking for these basic pieces of information on your vehicle, your catalyst is where to find them.

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