Bugger, 'metro' should read 'petrol', and 'any' should read 'my'. Also, 'an' should read 'and' Sorry - stupid fat fingers, exaggerated by auto correct....

 

ok this is still doing my head in I'm struggling to find the right part! i pulled the sensor's out the other day they have denso Q-E608 written on them. All the ones i seem to find online are shorter in length from the nut and wont screw into place. I've already tried to buy a part but they didn't fit. Does anyone know where I can get some, delivery is find keep in mind im in Australia.
I need two of them for bank 1 and 2, pre cat sensors!!

 

the sensors i bought were similar to these but they didn't fit. ive attached a photo of mine. as you can see mine are longer so the parts i got didn't screw in. its very frustrating lol

The main thing between my sensor and the parts im buying is mine have a large gap between the nut and the thread. So the parts im buying dont have this gap and so are able to screw in.

 

Denso o2 sensors are the oem brand for the Xtype. With Denso or Bosch sensors u should be fine. You can order them from Rockauto.com

 

Your O2 sensor has an extender on it like the one pictured below. Those move the sensor out of the exhaust flow so it reacts slower. They are used on the after catalytic O2 sensors to fool the ECU as a shortcut to get rid of the "low catalyst efficiency" codes and not have to replace the cat. I have no idea why anyone would put those on the pre-cat O2 sensors but if they did you would immediately get that P0133 slow sensor response code that you have. I would take the spacers off and try your existing O2 sensors. I'll bet you get rid of your P0133 code and get some other code that is the root of the problem someone tried to fix by mis-applying those spacers.