Nox sensor stripped. What do i do now

7/8 - 6 point deep socket. Heat the pipe. Still might take the threads out. No choice but to replace the pipe.

 

The local international dealer sells weld on bungs. They are available online. I believe they are 20mmx1.5 for most sensors. If the threads get thrashed, drill it out, grind it flat, weld new bung on.

 

You are correct on the thread and pitch. We have a bottoming tap to chase threads as Cummins and Paccar inlet is installed in a cast housing. Only one to weldable would be the outlet in the SCR itself.

Do you have a part number for the weld in bung?

 

Weld in bungs are available from this company also. One Box - Get it done. Right. - Refurbishing | Replacement | Parts for about $30.
At the shop we use a sockets similar to this " CTA Tools 2066 Heavy-Duty Oxygen Sensor Socket"
sold on Amazon about $33 and helps save sensor for core or warranty.

 

I'm near Edmonton Alberta in Canada. The dealer had a machine shop make.them. Dorman has a part 904-549.
I googled nox sensor bung and found several listed.
Same with temp sensor bungs, although they are more available thread. I bought nuts in the temp sensor thread. I snap one off, I drill a hole next to it. Weld a nut on, and screw in the new one.

 

And then I use high temp nickel anti sieze. And gently snug it up. So it comes out next time.

 

I am not familiar with the layout of the detroit 1 box. If this were mine, cut the sensor flush leaving just the nut. Pound a twist off socket onto the remaining nut. Heat the bung with a torch and make a valiant attempt to remove. If successful a bottoming tap to clean the threads. If the threads get thrashed or it simply will not come out. Grind it flat, drill remaining sensor out. Weld on a bung to the flat surface.
No jb weld will not work.