wtf, is the 1998 o2 sensor really different than the 1999?

[brookliner7]

So, I just bought an o2 sensor online made for a 92-00 Civic.
HOWEVER, in my haste to get my car running, I STUPIDLY dismissed reading the more detailed applications, assuming that if it fit the OBDI 92-95's, and the 96-98 OBDII ex's, it would fit the 99-00 OBII ex's.

Here is some detail about the application of the one I am stuck with:


93-00 Honda Civic CX, 2-Door, 3 Door, California Models Only, 4 Door, California Model, Automatic Transmission, Manual Transmission
92-00 Honda Civic DX, 2-Door, 3 Door, 4 Door, Automatic Transmission, Manual Transmission
92-98 Honda Civic EX, 2-Door, 4 Door, California Models, 4 Door, Except California Models, Automatic Transmission, Manual Transmission
99-00 Honda Civic GX
96-00 Honda Civic HX, Automatic Transmission
92-00 Honda Civic LX, 2-Door, 4 Door, Automatic Transmission, Manual Transmission
92-95 Honda Civic Si
93-95 Honda Civic VX, 2-Door, 3 Door, California Models Only, 4 Door, California Model

Anyone know what is different about these primary o2 sensors?

Is it the harness?
or something different about the voltage output to measure the o2 concentration in the exhaust?

And what is a GX?

Thanks in advance!

 

[EGHseries]

Is It A Four Wire Sensor For Starters And How Long Is The Pigtail