what is the difference in these O2 sensors ?

87next2last1 · Mar 16, 2012

Does anybody know the difference in these Oxygen Sensors ?
AC Delco AFS-20/GM 25162693 & AC Delco AFS-22/GM 25106073 ??
Need a new one in my 87 4.3L
Thanks !!:beer:

acauth1 · Mar 16, 2012

Both are upstream with one superceding the other.

what is the difference in these O2 sensors ?

87next2last1

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acauth1

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