I just pulled my O2 sensors to replace them, but the old ones have a different number on them than the new ones...

Old AFS 65 (Originals from 94 Z28)

New AFS 75 (I bought these a couple years ago but never installed them)

I checked Shoebox's site and it lists the AFS 75 as the correct O2 sensor, but he also has a new list on the right side that lists PT368...

Are the PT368 and AFS 75 just newer versions of the AFS 65?

 

The "PT"s are pig tails. That's the wiring connector...look at the title at the top.

 

Reading is clearly not my strong suit...

But do you happen to know if the AFS 75 replaced the AFS 65?

Thanks as always for your help!

 

AFS 75s are the only ones listed in the parts book. I don't know if 65s were ever used.

 

Thanks again Shoebox!

I just went to the AC Delco website and they only had the AFS75 listed. When I searched by AFS65, it didn't even recognise the part number...

At any rate the AFS65s I pulled out today are 13 years old and have 152k miles on them, so they're getting replaced.

Thanks again for your help!

 

I would say it is time...