What's the difference between regular ACDelco and ACDelco Professional ?
http://www.rockauto.com/en/moreinfo.php?...n=18&jsn=18
http://www.rockauto.com/en/moreinfo.php?...n=23&jsn=23
ACDelco Professional
- Thread starter Merkava_4
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A reboxed jobber part ? 
I think...
*One is GM OE
*The other is GM aftermarket which has a wider application for GM & other brands as well.
Is the Professional worth the extra $8 ?
If you're putting it into a GM Vehicle and you had decent longevity with the original then Yeah, I'd use the OE and spend the extra $8.
Are you trying to replace a known bad O2 sensor, or a suspect one?
Because there is a pretty simple way to bench test them with a propane torch and multimeter.
And it can also rehab them if marginal and get many more miles out of them.
I have had some that were throwing codes intermittently. I took them out, heated and tested them and they passed OK. After heating and burning the orifices clean via the torch, they went back in and worked perfectly.
Originally Posted By: Char Baby
I think...
*One is GM OE
*The other is GM aftermarket which has a wider application for GM & other brands as well.
Originally Posted By: Char Baby
If you're putting it into a GM Vehicle and you had decent longevity with the original then Yeah, I'd use the OE and spend the extra $8.
Oh, sorry! 
You probably can't go wrong but, I'd use OE!
You probably can't go wrong but, I'd use OE!
Interesting. So that means an increase in price doesn't always equate to an increase in quality.
Originally Posted By: Merkava_4
Originally Posted By: Char Baby
If you're putting it into a GM Vehicle and you had decent longevity with the original then Yeah, I'd use the OE and spend the extra $8.
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