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Discussion Starter · #1 ·
I need to replace all 4 02 sensors, its a long story as to why, but lets just hypothetically say I cut all of the wires off of them and now they need to be repalced.





Problem is all the searching ive done shows that they are made bank specific, but not up stream or downsteam specific. Is this just autozone being difficult? or is there an actual difference? Cuz some are $20, some are $50, and id much rather pay $80 than $140.



Thoughts and opinions?
 

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I can save you a couple bucks. Have the rear ones turned off by Hemifever. OK, thats expensive to do, haha, but you only really need the front ones. I have no cats and no rear O2's. The rear ones measure after catalytic converter reading. The front ones really control how well it runs. So, if it was me, I'd spring for the good ones.
 

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The front two and bank 1 sensor 2 are interchangeable. The only different one is the bank 2 sensor 2 and that is because the wire needs to be longer. Pretty sure Autozone has them for $20 then the odd one out is around $40
 
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