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Discussion Starter · #1 ·
Hello Frontier owners;

I have the dreaded P0420 code - passenger side catalytic converter failure.

113,000 miles

I have read enough posts regarding the code but haven't truly seen where the best place is to buy an OEM replacement. Dealership?

Any advice would be appreciated regarding the oem replacement or other suggestions for replacing the converter.

Thank you
 

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Discussion Starter · #6 ·
Do you have any idea of what caused your cat to fail? I'm at 145,000+ miles and have not had a check engine light for cats or anything else yet. I do have the ole flashing passenger airbag light on again as of today though.
Sorry I don't know. I just bought the truck so have no history on it. I have read about the O2 extender but believe that to be just bypassing the problem rather than fixing it.

I intend to keep the truck for a long while and so want to replace it right. The Walker Cats seem to be a good alternative.

My ultimate question is where is the best place to buy OEM cats from? Is there a preferred website that you guys/gals use or is it simply from your local dealer?

My dealer is $709 each after a $140 core return. That's over 10% of my trucks value in just 2 items!
Sounds crazy but I would probably do both as you have to pretty much take the suspension apart any way. At 114,000 miles now the other one could possibly go out at any time as well.

I appreciate the responses.
 
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