Thread: I gutted my cat
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      05-19-2019, 12:18 PM   #15
johnung
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Was the special o2 tool necessary or could you just use a crows wrench?
I had to use a proper o2 socket. Mine were on pretty tight.
So what about that tool is any different than using a wrench. Is there more torque or something? Or are people using an impact drill to get it out? I'm installing mine within the next week and want to by as few tools as possible.
Good question. Not positive of the answer though... other than it was worth the $10 for me to know I wouldn't have to fight it and risk damaging sensors or pipe (without proper tool).

This is the one I used. Can get on eBay for less if you have a few days to wait on shipping.

https://www.harborfreight.com/3-8-ei...nch-97177.html
Isn't Harbor Freight awesome for cheap tools that work. Some auto parts stores loan specialty tools for free too. I believe that the O2 sensor tool is just a socket with a slot to feed the wire out coming from the sensor.
I guess a socket is always going to afford a better grip than a wrench. Used to have a long pipe that would slide over a wrench to provide more torque like a breaker bar, but needed clearance to use it. It could loosen up anything.