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Are OEM primary & secondary o2 sensors the same

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Old Sep 8, 2009 | 10:30 AM
  #1  
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Default Are OEM primary & secondary o2 sensors the same

I am returning my car to stock but sold my secondary o2 sensor a while back and need to find a replacement. Before I put up my WTB, I was wondering if the primary o2 sensor will function properly in the secondary position. Same harness?

THX
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Old Sep 8, 2009 | 11:12 AM
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I don't think they're the same sensor. I think the primary has a heater and the secondary doesn't. Which would mean the wiring is different.
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Old Sep 8, 2009 | 11:34 AM
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Thx.
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Old Sep 8, 2009 | 12:20 PM
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harness is different. i have a secondary one if you want it i'll do 50 shipped. let me know
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Old Sep 8, 2009 | 12:34 PM
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Originally Posted by m R g S r,Sep 8 2009, 04:20 PM
harness is different. i have a secondary one if you want it i'll do 50 shipped. let me know
hahaha, u beat me too it.

i have both available for sale. ROFL.
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Old Sep 8, 2009 | 12:35 PM
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Damn, I just bought the manifold one, it was expensive as hell.
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Old Sep 8, 2009 | 01:38 PM
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I have a primary FS as well.
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Old Sep 8, 2009 | 08:41 PM
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The harness is different on the two but i dont know about the heating up part. I also have a primary/manifold o2 ill sell. They go for about $300 new i believe and will let mine go for $150 if anyone is looking and it only has 3000 miles on it so its practically new.
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Old Sep 8, 2009 | 08:41 PM
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The harness is different on the two but i dont know about the heating up part. I also have a primary/manifold o2 ill sell. They go for about $300 new i believe and will let mine go for $150 if anyone is looking and it only has 3000 miles on it so its practically new. PM me if interested.
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