Question: what tools do you need to change an o2 sensor?
Answer: New oxygen sensors.
Jack.
Jack stands.
3⁄8 in (0.95 cm) ratchet wrench or open end wrench.
7⁄8 in (2.2 cm) oxygen sensor socket.
Penetrating oil.
Auto diagnostic scanner/reader (optional)
Flathead screwdriver (optional)