So I purchased and installed some cheap o2 sensors a few months ago. I get nothing but codes for o2 sensors. They are apparently junk.

My question is what type/ brand is the best to use?

 

AC delco

 

this is what I figured but wanted to be sure.

 

Thanks for asking as I will be replacing the same parts soon.

 

Yeah it's messing with my fuel trims and mileage so it's going to be addressed in the near future.
In the meantime, I still have to install the lowering blocks on the back and tie rod ends up front.
I think I'll get a rear window decal that says Brooklyn Bridge.

 

I have asked the same question and was told AC Delco or Denso for aftermarket. I was told specifically to avoid Bosch. My mechanic has nothing but trouble with them.

 

I have had good luck with Denso.