Size of O2 sensor

[Navigator]

I have been told, or read, on a number of occasions what size the O2 sensor plug should be. Since I failed to write it down I can't recall. I'll be removing my O2 sensor tomorrow and need to buy a plug today. Can anyone tell me what size it is. I believe an oil drain plug from a metric car will do the trick. Hopefully it is something I can purchase at Auto Zone and not something I have to buy at the Triumph dealership.

 

[ruzzle]

Ya got it right Mike, 18mm sump plug, get 'em anywhere. You'll need a copper/aluminium gasket too ...

 

[Navigator]

Thanks Ruzz. I'm off the the parts store.

 

[R-III-R Turbo]

yup, m18 x 1.5mm thread pitch