What is the correct wrench size of the O2 sensor? 7/8″ (22mm) (22mm). An open-end wrench will probably round off the hex because the O2 sensor is frequently bound quite tightly. Purchase an O2 sensor socket, or a standard deep 7/8 “Cut the wires leading to the old O2 sensor, then remove it using the…

You can remove the stuck O2 sensor. It must be completed while the exhaust pipe is still warm. When you finally get a tool on the sensor after having difficulty doing so, you can simply leave it there while the exhaust pipe heats up. Just keep in mind to put on sleeves and gloves the…