O2 sensors for a 2003 (1 Viewer)

[richinsd]

I am trying to replace the O2 sensors on my 2003 LC. Hoping that someone can clarify some information for me.

I found this helpful chart from TLC O2 Sensors that was referenced in another thread in the forum (picture below).

My question is this.....the table shows that Denso part #234-4138 is for the pre-cat sensor.......they posted a nice picture

and part 234-4154 for the post cat sensor.....again they posted a nice picture.

I crawled underneath my truck and all of my O2 sensors look the same (like the upstream sensor). I've seen other posts in the forum that say the O2 sensors are all the same for the 2003.

If it's true that all are the same.... which part should I order? pre or post cat?

 

[97 AZ LC]

Your post-cats don't have the mounting bracket held in by 2 bolts?

 

[richinsd]

is that all that is? the little diamond/oval sort of shaped one? i never would have guessed it from that picture.

 

[97 AZ LC]

Oxygen sensors will have different part numbers for the slightest change, in this case mounting but commonly for a different wiring harness length.

 

[richinsd]

Thanks! Part #234-4154 it is.

 

[Cantatan]

I'm having a guys replace all 4 of my sensors. I'm supplying parts. How much labor do you think this involves?

 

[hoser]

Book rate, probably 2hrs.