Oxygen Sensors - FAQ - Page 18 - Lexus IS Forum
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post #256 of 258 (permalink) Old 11-01-2016, 11:30 AM
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Originally Posted by dallison View Post
I've got that, but there is limited space to work.
You can use a wrench, then lock another wrench on it to use as leverage. You'll need to disconnect it and slip the ring side of the wrench in.

Mike
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post #257 of 258 (permalink) Old 11-21-2016, 04:32 PM
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I think it should be noted that on both banks, sensor 1(precat, upstream) is the one that will effect performance. B1S2 and B2S2 (post cat, downstream) really only need to be replaced if you live in an emissions county.

Also, when it comes to getting these little b****** off, PB Blaster seemed to work wonders. Also, my local Autozone had a o2 sensor socket set that they rented out to me. This made it super easy for me. Especially B2S1(beside firewall).
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post #258 of 258 (permalink) Old 04-20-2017, 11:49 PM
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Just curious if anyone has the Denso part # for the 2 pre cat O2s. Ordering them off Amazon and just wanna make sure I get the right one. Thanks!
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