THREE Way Catalytic Converter.
Catalytic Converter.

• Essential part of your exhaust system
• Helps control emissions by filtering and reducing pollutants
• Replace when failing or worn out

The Catalytic Converter on your INFINITI is an essential component to the exhaust system. The Catalytic Converter controls emissions by filtering out and reducing toxic gases and pollutants from the exhaust. Without a functioning Catalytic Converter on your INFINITI, toxic fumes from the internal combustion process in the engine could release harmful gases into the environment through the exhaust system. Make sure your INFINITI has a working exhaust system with a new, genuine INFINITI Catalytic Converter.

If your current Catalytic Converter isn't working or is worn out, you may notice a few symptoms, such as reduced acceleration, excessive heat coming from underneath your INFINITI, a sulfuric or rotten egg smell from the exhaust, darker exhaust smoke, or even slow engine performance.

In addition to these symptoms, a bad Catalytic Converter can cause the check engine light to display on your dashboard. However, a check engine light on your dashboard may not always signify there's something wrong with the Catalytic Converter. If your INFINITI's check engine light is on, it's best to connect a scanner to the onboard computer to determine the cause of the malfunction indicator light. Bring your INFINITI to your closest authorized service center for professional help.

Your INFINITI's Catalytic Converter can wear out over time. It may become clogged or pieces inside the Catalytic Converter can break off inside the converter, causing a rattle while you drive. The Catalytic Converter can also be worn out by other problems in your vehicle. These issues can include the engine running too lean and causing the catalytic converter to run hot, or the engine burning too much oil. Make sure you rule out other potential issues for a bad Catalytic Converter before replacing it.

If you believe your Catalytic Converter is wearing down quicker than it should, head to your nearest authorized service center for a full vehicle inspection. Buy a genuine, new Catalytic Converter from INFINITI Parts and have a professional INFINITI technician install it.

This Exhaust System Catalytic Converter, B08B31NC0B, fits your INFINITI G37 or INFINITI G37X. See the What This Fits tab for more details.

Fits G37, G37X