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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 07-13-2014, 03:38 PM   #1
btoast
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Are the O2 sensors identical?

Hello,

Does anyone know if the O2 sensors are the same, i.e., the same thread pattern?

Can you swap their positions?
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Old 07-13-2014, 04:57 PM   #2
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Yes both are standard O2 sensor threading.
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Old 07-13-2014, 05:17 PM   #3
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Threads yes, connectors are usually different though.
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Old 07-13-2014, 06:09 PM   #4
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they shouldnt switch locations. each one performs specific functions.
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Old 07-13-2014, 06:10 PM   #5
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They appear different too.
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Old 07-13-2014, 06:43 PM   #6
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@dwx @Poodles @Darryljr11 @Captain Snooze

Thanks for the responses.

I was mainly concerned with the tread size and pattern. I just bought a used Rev Works header and I cannot get the O2 spacer to thread into one of the bungs. I wanted to check to see if they were the same. It appears they are.

I made another thread here: http://www.ft86club.com/forums/showthread.php?t=69958 with images that show the threads.
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Old 07-15-2014, 01:47 AM   #7
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It's fairly common for the threads to get damaged, especially if anti-seize wasn't used. I just went through this myself with the Miata in my family, the previous owner reused the stock O2's...but didn't apply new anti-seize. It took a torch to get them hot enough to release and the threads were still bad.


Luckily, as mentioned in your other thread, O2 bung thread chasers are abundant for this exact reason.
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Old 07-15-2014, 03:07 AM   #8
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Quote:
Originally Posted by btoast View Post
Hello,

Does anyone know if the O2 sensors are the same, i.e., the same thread pattern?

Can you swap their positions?

The O2 sensors are the same size but perform very different functions and you should never swap their positions.
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