You can try one of these, it is the same with a slightly longer nose, if no joy use an M18 x1.5 taper tap to start it.
we just mig over'n re bung (.98¢).2001 Tundra, 209K, front oxygen sensors. One driver side came out easy. Passenger side, not so much. Pulled a few bung threads out with it.
Wouldn't budge with O2 socket. Cut wires and used full impact socket. Long 1/2" Matco breaker bar? No luck. Makita short bursts and it came out.
Yay! Then, well, saw the result. Maybe it is better to replace them before 200K or remove and lube at 100K? Dunno.
Gonna take it to local shop; they are good but not cheap. Oh well... Ya win some and ya lose some.
Hopefully they can tap the bung. Oops!
Heat is your friend. Even a propane torch would help. Heat the bung area, and spray the sensor with water. Do that several times then try to remove.
I WD40'ed it. The bung is there; the first couple of threads are not. Gonna try the OTC thread chaser.do you think a couple shots of PB Blaster before trying to get it off, and a smack with a hammer could have saved the bung from busting off?
Ran the OTC thread chaser that @Trav suggested; it was not too bad. Could not start the O2 Sensor; it was a Amazon return. Do these threads look OK? I saved a whole $8 buying the returned part.
I have the O2 Sensor from Bank 1 that came out fine. I will try that romorrow, time permitting. Thanks!Oxygen sensors use the same threads as a spark plug, so if you have an old sparkplug laying around, see if it will thread into the o2 sensor bung.
You are seeing a little white lithium grease I sprayed as I chased the threads. I started with motor oil.i dont no what i'm lookin @. I may
C a striped out bung (lrg air space
between it & ex. pipe) and some kinda
whitish cream). May B one of the 6 sided
nuts is making a reflection & U simply show
a reptap. The cream some kinda cutting oil for
the tap.
Good Luck, be safe AND productive !