Hi,
What a post !
I read all the 18 pages and it took me a couple a hours but that was very interesting.
I have to replace my O2 sensors on r34 gtr. Replacing O2 sensors on R33 and R34 gtr hasn't been discussed a lot however.
My sensors are Bosch (ref starts with A24-A21 140 ...) . I spent several hours on bosch sites and I finally managed to find a matching sensor.
The ref is 0 258 005 726. It comes with a kind of universal plug as well.
This is a universal O2 sensor and is suitable to replace parts 22690-24U00, 22690-24U01, 22690-24U02, 22690-24U03 according to this document : bosch catalogue
It's clear that R32 GTR and R33/34 GTR don't have compatible O2 sensor and the universal sensor quoted above is not suitable for the R32 GTR according to Bosch catalogue.
has anyone here tried this universal sensor ?