Quote:
Originally Posted by djtodd
That's more common when removing from the manifolds, not the cats. I don't know if I've ever heard of someone messing them up when removing from cats. Honesty they have always come out rather easy for me.
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Mine passenger side cat O2 sensor was cross threaded from the factory, ended up having to out the car in a vise grip and use a breaker bar and a wrench to get it out. It completely smoothed the area where the threads used to be, with no hope of re-threading it so I had to overnight another O2 sensor to get to work the next day. I found an NKG one on rockauto.com for about $180 shipped. Major PITA.
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