99 Maxima SE-L Boston

Greetings, I've read many threads on the oxygen sensor topic, but they were all more than several years old. I plan on swapping out all four sensors and wanted to know if the last couple of years shed any new light on the topic.

I am installing new plugs (ngk) and new coil packs and want to the the oxygen sensors as well. Please chime in on you opinions regarding brands and the best places to shop for them. Thanks!

Fauken

iTrader: (6)

eBay, auto parts store, maxima joe.

Denso is a decent brand.

njmaxseltd

iTrader: (19)

Why are you replacing them? They are not part of general maintenance.
If your car is running fine, not throwing any emission related codes and gets good MPG then the only thing your doing is lightening your wallet. The two sensors after the cats do absolutely nothing to FI management, they only monitor the catalyst efficiency.

asand1

iTrader: (1)

1 don't do it.

2 If you really have a bad one get it at rockauto.com for $50 shipped. The Standard part I got there was made by NTK.

DBear

I've always bought mine from oxygensensors.com. You can get them with the matching connector, which simplifies the process. (I don't know if rockauto is the same.) One time I placed an order and someone called to tell me they didn't have the brand I ordered, was it OK to use a different brand at the same price. Not too many sellers will go to that much trouble.

maxgtr2000

iTrader: (29)

The front bank and rear bank o2 should be changed when mpg goes down (their voltage doesn't oscillate correctly) or you throw a code. I usually get mine from ebay $28 a piece. I have had this car since 01' and have never had to change the o2 by the cat. I'm currently at 190k miles.

tosheto

iTrader: (5)

If you do not have code, don't change them. I like rockauto as well.

Phromethius

Rockauto, and Denso's are fantastic. BUT like everyone has said, this is not "tune-up" worthy or part of regular maintenance. ONLY change if you are throwing a code. I have 236k miles and only replaced them ONCEa few thousand miles back because of a code.

S1cTech

I have baddddd MPG... I think I am gonna change mine.

Drag0n97

iTrader: (4)

I have a code for all of mine don't wanna change em plus my mpg r horrible I wouldn't change unless u have a code

nissan99

just changed the one after the cat denso is the best and plug works with the oem plug and play got on amazon