What size/thread is a O2 sensor hole?
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I need to plug some O2 sensor holes on my x-pipe (for some reason, it has holes where the back O2 sensors would go, but its an off road pipe). Anyone know what size/thread fitting I need to "plug" these openings?
Thanks, Shawn
Thanks, Shawn