2.2 Upstream O2 Sensor? (best Place to Buy and Proper Part Number) - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 3 (permalink) Old 10-20-2011, 04:26 PM Thread Starter
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2.2 Upstream O2 Sensor? (best Place to Buy and Proper Part Number)

Hey guys,

I'm gonna need a new O2 sensor and bung, since the other one is kinda bent from hitting the firewall, and I don't know how long my temporary solution will last. I would like to buy a new upstream sensor and a new O2 sensor bung and have it relocated where it will not hit the firewall to ensure I will not encounter any problems in the future. Just need that upstream sensor's part number as the best place to buy it, also where I could get a bung for it?

thanks! I'll be doing my own searching as well so if I find anything useful I'll post it, but in the meantime if anybody knows I would appreciate the help![hr]alright here's what I found:
Oxygen sensor, Cobalt, Front (position 1) 2.2L, GM part # 12611127

can anyone confirm if this is the upstream sensor? the other choice is position 2, rear, but GM parts direct charges more for the rear one, it's double the price which doesn't make sense!
The other option is:
oxygen sensor, rear (Position 2), GM part# 12578576

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post #2 of 3 (permalink) Old 10-21-2011, 05:16 PM
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I got mine from rockauto.com. the site is pretty easy to use check it out

---------- Post added at 08:16 PM ---------- Previous post was at 08:15 PM ----------

you should be able to get an 02 bung at exhaust shop, when they weld it in.

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post #3 of 3 (permalink) Old 10-21-2011, 05:34 PM Thread Starter
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^thanks but I found another solution.


I didn't realize it but ZZP sells upstream O2 sensors and O2 bungs. I will be ordering the upstream sensor and bung from them. Pretty good price too. Can't complain!!!

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- SOLD -S256 TURBO 2.2 -SS/TC body, SS/Tc shocks/struts, B&G springs, 17"mags, TRS FX-R retrofits (50W/6000k)
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