Which front o2 sensor...? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GlennP · 11-05-2011, 11:00 AM

Hey guys, stripped out my passenger side pre-cat sensor while taking it out of the old exhaust. Im having a helluva time figguring out which replacement will work?

I have a 2011 2SS

On rock auto theres 4 options.

Obviously the downstream or rear one are not the one:

Is "posn 2" or "posn 3" what I want?

ugh :(

GlennP · 11-05-2011, 05:42 PM

http://www.amazon.com/ACDelco-213-44.../dp/B001KSANEO

Is this what I want for the passenger side upstream sensor?

Hmmm

JANNETTYRACING · 11-05-2011, 07:09 PM

Quote:

Originally Posted by GlennP

http://www.amazon.com/ACDelco-213-44.../dp/B001KSANEO

Is this what I want for the passenger side upstream sensor?

Hmmm

I would suggest you call the Dealer with your Vin Number and get the Correct Sensor.

If you mix brands left and right you could have a tuning Issue.

Ted.

Russell James · 11-05-2011, 07:21 PM

It looks like that is the front. I looked up the OE number that cross references to that AC Delco number - 12617332 - and on a dealer's online parts ordering system it shows as pos 2 - pre catalyst. The one they show for pos 3 says post catalyst. So it looks like you need that one called position 2.

http://parts.nalleygmc.com/products/.../12617332.html

It looks like that is the OE part, should be OK.

JR-Vette · 11-05-2011, 07:29 PM

02 sensor placement map

B1 is where cylinder 1 is so for GM that is drivers side which leave
B2 for passenger side

S1 is before (upstream) the CAT
S2 is after (downstream) the CAT

As example B2S1 is right front and B1S2 would be left rear.

Do not be cheap on this, ie, spending a bit less on "generic" type as it may not match well with the PCM hardware quad driver causing false AFR readings

New 02 should come with a bit of anti seize on threads if not make sure you put some on.

11-05-2011, 11:00 AM	#1
GlennP Drives: 2011 Camaro 2SS Join Date: Oct 2011 Location: Bridgewater, NJ Posts: 373	Which front o2 sensor...? Hey guys, stripped out my passenger side pre-cat sensor while taking it out of the old exhaust. Im having a helluva time figguring out which replacement will work? I have a 2011 2SS On rock auto theres 4 options. Obviously the downstream or rear one are not the one: Is "posn 2" or "posn 3" what I want? ugh :(

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11-05-2011, 05:42 PM	#2
GlennP Drives: 2011 Camaro 2SS Join Date: Oct 2011 Location: Bridgewater, NJ Posts: 373	http://www.amazon.com/ACDelco-213-44.../dp/B001KSANEO Is this what I want for the passenger side upstream sensor? Hmmm

11-05-2011, 07:21 PM	#4
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	It looks like that is the front. I looked up the OE number that cross references to that AC Delco number - 12617332 - and on a dealer's online parts ordering system it shows as pos 2 - pre catalyst. The one they show for pos 3 says post catalyst. So it looks like you need that one called position 2. http://parts.nalleygmc.com/products/.../12617332.html It looks like that is the OE part, should be OK.

11-05-2011, 07:29 PM	#5
JR-Vette Drives: 1999 500 HP Corvette Join Date: Jan 2010 Location: West Coast Posts: 164	02 sensor placement map B1 is where cylinder 1 is so for GM that is drivers side which leave B2 for passenger side S1 is before (upstream) the CAT S2 is after (downstream) the CAT As example B2S1 is right front and B1S2 would be left rear. Do not be cheap on this, ie, spending a bit less on "generic" type as it may not match well with the PCM hardware quad driver causing false AFR readings New 02 should come with a bit of anti seize on threads if not make sure you put some on.