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What size plug for rear O2s?

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Old Jun 15, 2011 | 10:44 PM
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Default What size plug for rear O2s?

Headers installed and the rear O2 would NOT NOT NOT come out of the old Y pipe...so my new Y pipe has an open hole where the O2 sensor should go. What size plug can i buy to fix this?

Also, if anyone has a junk O2 sensor laying around (a broken one would be perfect) that they would ship to me and I would pay shipping, let me know. I am getting my codes deleted and need to have one for visual inspection.

Thanks!
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Old Jun 16, 2011 | 12:56 AM
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oxygen sensor bung plug = 18mm x 1.5 aka M18 X 1.5. You should be able to purchase at a local hardware store.
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Old Jun 16, 2011 | 07:25 AM
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Awesome, thank you.
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Old Jun 16, 2011 | 09:40 AM
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Toyota oil drain plug fits, and has a nice big head
to grief on when it rusts later. Beware the stainless
Allen head plugs, they can gall in place and smear
like butter when you try and back them out.

You can find the drain plugs in blister packs at all
the auto parts stores.
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Old Jun 16, 2011 | 07:29 PM
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I like using those drain plugs also.
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Old Jun 16, 2011 | 09:23 PM
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Originally Posted by jimmyblue
Toyota oil drain plug fits, and has a nice big head
to grief on when it rusts later. Beware the stainless
Allen head plugs, they can gall in place and smear
like butter when you try and back them out.

You can find the drain plugs in blister packs at all
the auto parts stores.

NO one around here has the plug, but I did not ask for a drain plug. I will have to try this, thank you.

Also, if anyone has a non-working O2 sensor, they are just going to throw away, please PM me, I will buy it off you!!
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Old Jun 17, 2011 | 08:21 AM
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I went to the local auto parts store and they had both the bungs and the plugs right on the shelf.
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Old Jun 17, 2011 | 11:39 AM
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I just took my exhaust off so I have an extra... Still in the pipe but when I get off I'll see if she comes out n I'll let u know
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