Catalytic Converter

Part Number: 208B3-CD425
Supersession(s): 208B3CD425

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

Your INFINITI's Catalytic Converter is an important part of your vehicle's exhaust system. The Catalytic Converter helps regulate emissions by filtering and reducing pollutants and toxic gases. Without a functioning Catalytic Converter on your INFINITI, toxic fumes from the internal engine combustion process could emit harmful gases through the exhaust into the environment. Ensure the exhaust system on your INFINITI is working like it should with a genuine Catalytic Converter from INFINITI Parts.

If your Catalytic Converter is worn out or not working, you might notice some symptoms, such as darker exhaust smoke, slow engine performance, reduced acceleration, a sulfuric or rotten egg smell from coming from the exhaust, or excessive heat from underneath your INFINITI.

Additionally, a malfunctioning Catalytic Converter can trigger your vehicle's check engine light. However, a check engine light on your dashboard doesn't always mean there is an issue with the Catalytic Converter. If the check engine light is on in your INFINITI, connect a scanner to the vehicle's computer to determine the source of the check engine light. Your nearest authorized INFINITI service center can help.

Over time, your Catalytic Converter can wear out. It can get clogged or pieces within the Catalytic Converter can break off and cause the converter to rattle while you drive. Other issues on your vehicle may cause the Catalytic Converter to wear out as well. These issues can include the engine running lean, causing the Catalytic Converter to run hot, or burning oil in your engine. Make sure you rule out other potential issues for a bad Catalytic Converter before replacing it.

If you think your INFINITI's Catalytic Converter is wearing down quicker than it should, head to your nearest authorized service center for a full vehicle inspection. Get a new Catalytic Converter from genuine INFINITI Parts and have it installed by a professional INFINITI technician.

This Exhaust System Catalytic Converter, 208B3CD425, fits your INFINITI G35. See the What This Fits tab for more details.


Fits G35

5 people have looked at this part recently
Diagram CATALYST CONVERTER,EXHAUST FUEL & URE IN for your 2003 INFINITI G35
#20802+A
Required: 1
VQ35DE<200201 - 200208>
VQ35DE<200208 - 200306>
VQ35DE<200306 - 200310>
VQ35DE<200310 - 200408>
VQ35DE<200408 - 200508>
VQ35DE<200508 - 200608>
VQ35DE<200608 ->
2003 - 2004
- C. VQ35DE. AT. F5 + VQ35DE. MT. F6

2004 - 2004
- C. VQ35DE. AT. F5 + VQ35DE. MT. F6

2004 - 2004
- C. VQ35DE. AT. F5 + VQ35DE. MT. F6

The price of this item includes a refundable core charge of $250.00.

A core charge is a refundable deposit added to the cost of certain car parts. It reduces environmental impact by providing an incentive to return the old, used part (core) for recycling when purchasing a new or remanufactured component. Returning the core in good condition allows you to get the core charge refunded.

Core Charge

This product has a $250.00 core charge which will be included in the cart at checkout.

Policies & Information

Manufacturer Warranty