What tool makes the 02 sensor removal the easiest?
I usually use a crescent wrench to remove my o2 sensors. They make a socket that is specifically made for o2 sensors, but I'd still still just use a wrench unless you're removing o2 sensors every day.
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Originally Posted by Starz T/A 17
Advanced Auto sells a socket that has a slit in the side so you can get the sensor out w/out cutting the wires
You dont have to cut the wires if you use an open end or crescent wrench. I'd LOL if someone cut the wires to try and fit a socket on it!
I had bad luck one with the O2 socket distorting and then rounding the bolt head off, so I've used open end wrenches, and been good. If you can find a 22mm flare wrench, that might eve be better. Always put some anti-sieze on the threads when you install (don't overdue it, you don't want it to get on the sensor itself). I just pulled mine off the headers this week, and they came out pretty easily with some PB Blaster. The header to cat flange bolts are another story though 
