If you use an NTK sensor like the OEM one an oxygen sensor socket WILL fit back there for installation/removal, contrary to what the how-to says.
If you use a Bosch or it's got a Bosch in there already, it will not. the Bosch ones are thicker than the NTK ones.
If you are dealing with a Bosch sensor, you'll need to use a 7/8" wrench from above to tighten/loosen it.
