Pluging a bung - What Size threads??

[cdaw2001ES]

I need to stick a stud bolt into my old 02 bung that will in the future house an egt probe. I don't have a spare o2 sensor to take with me to the store, so I was hoping somebobdy knows what I need to get.

[cdaw2001ES]

I got it, it's 18X1.5 Found it in the Automotive plug drawer.
It's amazing how loud that little hole can be https://www.thegalantcenter.org/style_emoticons/default/ohmy.gif

[pinoyesv6]

try contacting the manufacturer of your headers...they made the holes and welded in the bung, they should know too

[cdaw2001ES]

No, not for the headers. THis was for my stock hole, now that I've moved the o2 to behind the new cat. NO MORE SES LIGHT. and 100% legal
The 18X1.5 fit perfect.