Best brand of O2 sensors?

[Rayyy]

Hunting down a P0135 code… Going to replace the O2 sensor, and realize there is a million different brands out there.

AC Delco, Bosch, etc., and I’m leaning toward the Genuine GM ones.

Is there a consensus on something better?

 

[Teamiez]

Genuine gm oem / ac delco, rock auto is your best friend.

 

[MassHoe04]

I went with Denso from local NAPA. Regular price was $55 each. No shipping and NAPA had 25% discount for buying 3 or more items. I got two for $88!

Identical to factory sensor in every way, as far as I can tell.

https://www.napaonline.com/en/p/DEN2344668?impressionRank=1

Little squeeze tubes of anti-seize for the threads are included in the box, too.
Makes it easier for the next guy! (LOL)

I replaced 2 downstream sensors in October. Zero issues!

 

[SnowDrifter]

Genuine gm oem / ac delco, rock auto is your best friend.

This

It's been my general experience that aftermarket for this stuff is a shitshow. I ALWAYS get OE for core electronic components. And some select mechanical bits...

OEM ones lasted you how long? Yeah, do those again.

 

[OR VietVet]

Genuine GM parts for best results.

 

[Teamiez]

This

It's been my general experience that aftermarket for this stuff is a shitshow. I ALWAYS get OE for core electronic components. And some select mechanical bits...

OEM ones lasted you how long? Yeah, do those again.

My tahoe only needed 1 O2 sensor since new, 2001 @ 200K