Part number for heated o2

[Shawn Lin]

"Andrew K. Mattei" wrote:
> 
> I recently purchased two new O2 sensors for my '94 Z28, four wire, AFS-75,
> P/N 25312184, I think they were around $33 each from Dal. BTW, great list

After 96 or so, the AFS109 replaced the AFS75 in all GM apps that I've
found.
Any idea what the difference is (besides being 2x the price)?

Shawn





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