I have about 170k now, and want to replace my o2 sensors. Does anyone have any recomendations on what brand or place to buy from? Thanks.

 

I'm new here but I replaced the ones on my 99 maxima and 01 Tundra with Bosch.

 

The bosch seem to be about the most expensive. Thats what I want to get but X 4 is a good chunk of dough. I looked on this web site www.carpartswholesale.com that has awsome prices but I've never heard of it before. Has anyone used this site?

 

I could see replacing the primaries (front two) with that mileage even without a code showing them out spec. However, the secondaries job is only to monitor the prescence of the cats so I would not replace as they do not affect air/fuel corrections. If you do not have a cel light for either of the secondaries, I personally would save my money until they croaked. I have only used Bosch as well on previous VQ's but have not replaced them on my G sedan yet.

 

I didn't even think about that. But I should of. I really appreciate your response and that's exactly what I'm going to do, just replace the two before the cat. I've actually only used bosch as well. So I guess I'll just stick with them. Thanks again.

 

Denso > Bosch is what I've always heard.