Ok so i have found several diagrams to show me the O2 sensor I need to replace (bank 1, sensor 2) but when I look for it under my car the one that it tells me to replace is a different size.

maybe i have a Cali spec but I doubt it? I have a diagram from genuine nissan parts and it tells me I have 3 O2s. but I could have sworn I have 4 but again I am prob just dumb.

I've also asked my michanic buddy nd he said it is the one after the cat. but i thought i had 3 cats and I only found one on the cat under the center council. I also found one on both exhaust manifolds.

I have no engine mods

I am sure I just passed over something and if so I am sorry for waisting your time.

any thing is helpful thank you.
Jake

 

The ypipe has 2 PREcats.

You do have 3 o2 sensors.



This applies to ALL 4th gens except 99 cali spec

 

wow perfect thank you very much