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· Super Moderator
20,702 Posts
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
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.
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