Thread: T25 j pipe bung sizes

I bought a t25 with the o2 sensor bung missing. Reading around, I see some people talking about the fat o2 sensor. My o2 sensor is in my down pipe, I want to plug this hole. I went to a couple of industrial supply houses looking for a plug, but couldn't get anything that fits right. The closest thing I came up with is a 5" long M24 bolt, but its obviously ridiculous. Anybody have any tips on what to use to plug this hole (the big one)?

Go to the junk yard and unbolt a bung. The screw to close that can be had at any auto store.

yeah your missing a piece there

So, you think that bungs are standardized, and any bung will fit this hole? I know there used to be a hex head with threads inside that used to thread into this hole, I've seen it in some pictures on the forum. Is that a standard sized piece?

You can get one from any sentra, altima, g20...etc they will all work. Search for the thread pitch of the o2 sensor to block off with a bolt. Its posted around here.

Just a regular exhaust manifold? That makes sense.


Sent from my iPhone using Tapatalk