02 sensor won't thread in
#3
The O2 bung may have damaged threads. The threads would have been damaged due to galvanic corrosion "welding" the threads together.
You may have to have a new bung welded to replace the old one. Be sure to install the new O2 sensor with Anti-Seize on the threads. Use care in not getting Anti-Seize on the O2 sensor element.
You may have to have a new bung welded to replace the old one. Be sure to install the new O2 sensor with Anti-Seize on the threads. Use care in not getting Anti-Seize on the O2 sensor element.
#7
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#9
Yes, you don't need to take the cat out.
18mm is the size,
Tool link http://www.northerntool.com/shop/too...6166_200396166
18mm is the size,
Tool link http://www.northerntool.com/shop/too...6166_200396166