The threads on my old sensors are 12mm. I'll probably just fab up a couple. Only need two. But I have to first check if there's enough clearance under there. If I remember, one side the O2 is mounted with the wires straight up and is fairly close to some obstruction. But I'm going off memory, which is never a good thing ..he he.

 

True. my bad on that link.

 

Yeah, I think I spent more time looking for spacer (the right thread) online, than it would take me to make a couple, LOL. I might make a 90* spacer for that one side. Kill two stones with once bird. I'll let you all know how it goes. Probably won't install them till spring. Be putting the L/R to 'bed' for the winter here pretty soon.