Difference between rear and front O2 Sensors?

[elementalwindx]

In my 95 GST Eclipse what are the differences between a RearO2 and Front O2? My front O2 took a crap on me after almost 120,000 miles on it and my friend has a new rear o2 he's willin to give me but he says they are different.

 

[Jebus[tuning]]

Well, the rear one tells the ECU if the front one is working. So yes they are different. Go get one from Kragen/Schukers/Checker whatever.

 

[blackGSX2g]

The rear one tells the computer weather or not the catalytic converter is working. Thats why when you install a test pipe, the ECU flags a code for rear o2.

 

[Coup D E'Tat]

I think he meant what is physically or electronically different with them.

However, I can't give you any more info other than what the last two guys said.

 

[blackGSX2g]

Ahh yes...I was just correcting Jebus

Well, according to Mitsu they have different part numbers...but that doesn't tell you much. They had 3 part numbers for 1 bolt I went to go pick up.

 

[ADrewzki]

I want to say they are slightly different. I'm not 100% certain but I think the front one is heated and the rear one is not. You shouldn't use the one for the rear for your front one. I purchased one from my local checker/kragen store and it didn't come with the plug so I had to cut wires and tap it into my old one. Kinda sucked. I would recommend oem for easy plug and play.

 

[elementalwindx]

I just want a quick fix before christmas I'm hoping to get a wideband o2 sensor as a present and if thats so I dont want to waste 80$ on a new sensor and then get a 300$ wb Thanks guys.