02 sensor bung thread tap

[NCoppersmith]

Ok, so we're replacing the 02 sensor on an 06 2.3L and after throwing out my back and knees, finally got the OEM sensor out. Looking at the threads on the old sensor and the bung, it's in pretty bad shape, so I want to chase a tap through there to clean up the threads a bit before putting the new one in.

Anyone know what a standard 02 sensor thread is and what size tap to use?

 

[flash75]

It's 18mm x 1.5. Same as an 18mm spark plug.

Clifton