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Not having the special socket for R&R O2 sensors, unplug the wire harness and cut the wires off at the sensor. This will allow you to slip a 7/8" box wrench over the sensor for counterclockwise removal. Install the new sensor using a 7/8" open end wrench and tighten as you would a spark plug and reconnect the wire harness.

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Q: How do you replace an o2 censor?
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