Oxygen sensor?
 

Hey everyone, this is my first post. I'm looking for some info and maybe some parts for my girlfriends 95 nissan altima. I'm guessing it's an oxygen sensor, it's hanging in the middle or her car, from her exhaust. Apparently she had it fixed a while back and the guy ghetto rigged it in there for her, but now it blew out again. Definete leak in exhaust and poorer gas milage. I would like to know if it is just a mid pipe with o2 bung or is it a single piece w/ cat? some diagrams or pics would be helpful, as I have not looked fully under her car.

Thanks again,

RJ Sclafani

RE: Oxygen sensor?
 

yeah thats the secondary o2 sensor i have the same screwed into my cat which is also attatched to the underside of the car just behind the cat on my 95 that things about 130 bucks brand new but dont go to the stealership to get a new one