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What is the thread callout for the O2 Sensors on Rb26?

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  • What is the thread callout for the O2 Sensors on Rb26?

    Hey guys, took out the twin O2 sensors and put a single further down the downpipe for tuning, and I was wondering what the thread is for the O2 sensors. I still have the O2 sensors in right now and I want to have the plugs ready so i can take out the sensors and put in the plugs at the same time. Thanks!

  • #2
    I believe it's an M12x1.25
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    • #3
      Go to Lordco, pick up 02 plugs from one of a bunch of suppliers, screw them in. They look like a realy short bolt with a 13/16" head on them. You may have to buy it with the bung. Should be about $12 each.




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      • #4
        Factory will be m12x1.25 but its a bushing. If you remove it you will have m14x1.25 which is the modern standard for o2 sensors.
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