in my manual, as best as I can tell, if my post cat O2 sensor is located after the cat, and doesnt thread into the cat's shell, then I have a regular emissions system, not a ULEV or even a LEV, so I would need the O2 sensor labeled as "all except ULEV". am I right on this assessment?

 

Jw, I am a Product Specialist with Walker Products, a manufacturer and worldwide distributor of oxygen sensors. It would help if I knew what year of Neon you drive and what engine you have.

 

that's odd, i could've sworn my signature, or something like that automatically showed what i had.

anywho, thank you for your reply! it's a 2000 dodge neon, with SOHC 2.0L, ATX.

 

The ULEV Neon was only made in early 2000, and if you have it, you will the regular cat and a smaller one at the end of the exhaust manifold along with (I believe) a third O2 sensor.
EDIT 1: I found a post of mine from some time back where I typed LEV Neons only have one O2 sensor? Not sure where I found that....

EDIT 2: This is the emissions/cat/O2 sensor diagram from the 2000 Neon Factory Shop Manual

 

yeah, ive seen that pic in my FSM. I didn't look at my options at autozone clearly enough, it seems there are in fact only 2 different types; ULEV and all except ULEV. So I did in fact get the right one, I was thinking for some reason there was a third option. Good to know the ULEV is as scarce as it is, cuz I imagine it's quite a pain!

 

Just an extra cat. Still stoopid though.