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I am replacing my o2 sensors and all of them are in except the one on the passenger side before the cat. I am having the hardest time getting this one unscrewed. Nothing will fit in there to get a grip on the bolt. Any Suggestions.
when I changed midpipes, I think I had to wait until my midpipe was disconncted from the exhaust manifold before I took that one out. I think a small adjustable wrench might work if you are lucky.
I was able to get an open end 22mm up there when swapping midpipes. You can also try to rent an O2 socket and see if you can get a socket wrench with the O2 socket up in there.