So I'm trying to get a reasonable deal on some o2 sensors. (I only need 2)
My tuner recommended NTK over all the others.
So, the part numbers for the left and right side are 21528 and 21544.

What is the difference between these two part #s? Maybe just wire length?
Could 2x the 21528s work just the same?



TLDR: Can I run 2 "left" o2s in the two front positions

 

the wire length is prob different. i noticed when i did my headers. if u get em to short i wouldnt worry just splice in more wire thats what i did

 

k, so as far as I can tell the only real difference between part numbers is the wire length, but that isnt a worry. looks like i'll be ordering these right now

 

I'm trying to figer out what are the best Oxygen Sensors for our cars too..
in one of the outher posts i looked @ it was menchind that the Vett Post-Cat Sensors are faster & have a longer wire (good 4 Lt) but did not say what year to look for :/ i did a search for 2000 corvett and got NTK Part # 21537
Any one know or input if thats the right one?
Thanks George #4