oldmano2z

noob question, throwing p0420 bank one and p0430 bank two . Are these sensors behind the cats? scan tool also says below threshold on both codes american racing catted "Y" with 30k on it new ls6 3k old. i think these o2s have over 70k miles on them. what are the best ones to get and the cheapest, i guess i'm looking for the best of both worlds. and what part stores do you guys suggest? thanks in advance. "the old man."

silverz28ls1

AC Delco 02 sensors are probably your best bet

oldmano2z

are the front and back the same? i read somewhere that corvette sensors are better and have longer pigtails so i can get rid of the wire extentions that came with my catted "y" ???

silverz28ls1

someone will correct me if im wrong but i do belive you can use the o2 sensors after the cat on the vett for the camaro

2001NBMZ28

Most likely not the sensors, those codes mean the cats are bad.