# O2 Sensor for KA-T setup

**URL:** <https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085>\
**Category:** SON240sx Automotive\
**Created:** [July 19, 2006, 8:10am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085 "2006-07-19T08:10:32Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![s1495](https://avatars.discourse-cdn.com/v4/letter/s/b2d939/32.png) [@s1495](https://forums.speedlife.net/u/s1495)\
**Post date:** [July 19, 2006, 8:10am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/1 "2006-07-19T08:10:32Z")

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I’m wondering what you guys are using for o2 sensors when using a stock sr turbo extension on a ka-t. The thread will fit a z31 o2 sensor - but that thing has 3 wires and our stock ka o2 has only 1.

Thanks!

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**Author:** ![scribbles](https://avatars.discourse-cdn.com/v4/letter/s/bb73d2/32.png) [@scribbles](https://forums.speedlife.net/u/scribbles)\
**Post date:** [July 19, 2006, 9:12am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/2 "2006-07-19T09:12:59Z")

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well, most Sr’s have the single wire O2 so use a single wire O2… no fuss, no muss, no bs.

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**Author:** ![Bero](https://avatars.discourse-cdn.com/v4/letter/b/e8c25b/32.png) [@Bero](https://forums.speedlife.net/u/Bero)\
**Post date:** [July 19, 2006, 9:37am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/3 "2006-07-19T09:37:07Z")

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z31 should have 1 white, 1 red and 1 black.

the white is the signal wire in that case, just trim back the black and red, they are for heating purposes only.

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**Author:** ![s1495](https://avatars.discourse-cdn.com/v4/letter/s/b2d939/32.png) [@s1495](https://forums.speedlife.net/u/s1495)\
**Post date:** [July 19, 2006, 10:15am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/4 "2006-07-19T10:15:48Z")

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awesome! thanks guys for the info!

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**Author:** ![papapump](https://avatars.discourse-cdn.com/v4/letter/p/8dc957/32.png) [@papapump](https://forums.speedlife.net/u/papapump)\
**Post date:** [July 19, 2006, 4:36pm UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/5 "2006-07-19T16:36:51Z")

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i know on the sohc ka stock exhaust manifold you can unscrew the 02 bung as you can on the stock sr turbo extention, so what i did was just swap them and problem solved, not sure if you can unthread the o2 bung on the dohc manifold though. Check it out may help

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**Author:** ![s1495](https://avatars.discourse-cdn.com/v4/letter/s/b2d939/32.png) [@s1495](https://forums.speedlife.net/u/s1495)\
**Post date:** [July 21, 2006, 8:03am UTC](https://forums.speedlife.net/t/o2-sensor-for-ka-t-setup/98085/6 "2006-07-21T08:03:31Z")

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> [@papapump](#):
>
> i know on the sohc ka stock exhaust manifold you can unscrew the 02 bung as you can on the stock sr turbo extention, so what i did was just swap them and problem solved, not sure if you can unthread the o2 bung on the dohc manifold though. Check it out may help

I just did that few minutes ago after calling several die shops :oops: … Fits right in - thread is 24x1.5mm

Thanks Papapump!