Best O2 sensor?

Reply Subscribe

Thread Tools

Search this Thread

Apr 10, 2018 | 09:37 AM

Fast one

Thread Starter

Safety Car

Joined: Jan 2001

Posts: 4,990

Likes: 500

From: Hilton NY

Best O2 sensor?

Rock auto has six different companies that sell upstream O2 sensors with various prices. Are they all about the same quality or is there a best one to buy?

Apr 10, 2018 | 10:07 AM

lionelhutz

Race Director

Joined: Apr 2007

Posts: 11,150

Likes: 890

From: South Western Ontario

Just stay away from any off-brand sensors. I've seen a few cases where they are built wrong and don't work. The O2 sensor negative wire needs to be connected to the case and some cheap ones don't have that connection. I think they are mostly Ebay or Amazon sourced, but Rockauto might have got suckered in by some off-brand supplier too.

Apr 10, 2018 | 12:24 PM

midnight01

Pro

Joined: Jan 2016

Posts: 550

Likes: 53

From: Fort Myers Florida

Quote:

Originally Posted by Fast one

Rock auto has six different companies that sell upstream O2 sensors with various prices. Are they all about the same quality or is there a best one to buy?

I went with 3 different ones, I used an off brand from fleabay and they lasted 2K miles and failed.
I went with Denso's and although they didnt fail, they were only cycling between 200 and 600mv so my fuel trims were all over the place and my car started to misfire.

I went with Bosch and haven't looked back since. you get what you pay for and with something as important as O2 sensors, don't try to be cheap because it will bite you in the a$$. I went cheap both times because it was what I had available at that moment. never will I do that again.