BMW E39 M5 Code 0d - pre cat oxygen sensor, cylinders 1-4

[E39m5]

I got a question. I have 03/2000 BMW E39 M5. Car is approaching 111000 miles / 178637 kilometers. My SES light came on with Code 0d - pre cat oxygen sensor, cylinders 1-4. I think that the part # is 11 78 1 742 050 and I think the part that is in the picture is a correct part.


If I am not mistaking there is no cutting or welding involved. Just plug in / screw in. Right? And Cyl 1-4 is the passenger side (Right side of the car). Am I correct? Just wanted to get some info before I start the replacement. I have a great shop with honest mechanics that can do the replacement, but I really want to do the work myself.



My initial plan was to work on a cold car. I was going to disconnect the battery. Then wait 5 to 10 minutes. Then spay the old sensor with WD-40 (where it screws in to the exhaust. Not the other end). Let it sit for about 5 minutes, and then just unscrew it from the exhaust and unplug it form the other end. Am I missing something? It seems too easy. So I am starting to have doubts, thinking that I am missing something important. Also I read that exhaust has to be fully warm/hot before the sensor is removed. Is that correct? That part seemed a little odd to me, so I am looking for some directions from other drivers/mechanics that have replaced the part before. Pictures of course helpful.

Thank you!

[westin]

it is that easy,as long its in a good spot and its not seized,you can do it with the exhaust warm ,the pentrant works better

[E39m5]

Thank you for the info.
I actually ended up replacing both. Go them both for $96. And luckily both sensors came out with out a fight.