yeh, didnt think it was Zirconia, as it will be different volt range/calibration?..
i knew theres fat and skinny. skinny is titania i guess, as the fat one on the s13 i seen has a Z on the code (bosch)
from canadagtir is the S13 info
I had this issue in finding an o2 sensor to pass my emmision test. I ended up calling NTK Techline and I was told that you need to use a Titania sensor verses a zirconia sensor. He suggested that they no longer make a universal sensor in this style as people were not wiring correctly and expecting warranty. He told me to order a sensor for a 1989 300zx turbo and re-wire to my connector. I did this and passed with flying colours. The sensor was all of 65.00$ from p-source. A local tuner verified that this is a easy and fitting solution.
i ordered the s13 sr20det o2 sensor, plugged in works perfect http://www.thenismoshop.com/ikorb.php?func=catalog&category_id=3812&product_id=1607
apparently skinny is 'red top', fat is 'black top'
http://forums.beyond.ca/st/236743/fs-nissan-genuine-s13-sr20det-skinny-type-oxygen-sensor/
@pobody, its a normal Z sensor in mine, someone spliced it into plug, was black/white/white wires
so i need either a 18mm titania,
or a lambda reducer (18 -> 12mm £4.59 for just reducer), or try get the reducer in my elbow out! fun.