food nd cars

Its been a awhile since I have been on here.. But anyways as the title says I am looking to buy AC delco O2 sensors, but I have been reading some discrepancies about new designs and branding etc. Anways.. Which one of these places would be wiser to order from? I want to get as close to the original O2 sensors as possible.. I have been having an issue with a slight stumble at partial throttle and my wideband starts to spaz out when i hit closed loop.

GM pn #19178930
AC delco: AFS75

Here are the links to both sites.

http://www.gmpartsdirect.com/results.cfm

http://www.rockauto.com/catalog/rafr...artnum=2344012

I don't think the link to gm parts direct will get you to the sensors but the gm pn is listed above.

camar0corey

iTrader: (22)

Buy Bosches from Autozone and warranty them out every 11 months.

food nd cars

I already have them. They make my car run like ****.

Valkyn

iTrader: (8)

GMpartsdirect takes awhile to ship stuff, rock auto is very fast.

Can't comment on which sensors are closer to stock.

Sc0tt30

iTrader: (6)

you can get the AFS75 at a good price from ebay. They are the true ac delco ones too.

lt1-xjs

I ran the same Bosch 02's for over 10 years.

95 TA - The Beast

iTrader: (2)

Bosch O2 s are well known to be ***** with LT1 setups...

Now, that was a thing in the past and I have no idea if they have changed thier design or not, but it was well known. I believe the big issue had to do with how they referenced ground inside the sensor, ie, they used the case not the extra ground line, thus you would get drift if there was a ground differential with your headers (common issue, especially with well-coated ones).

Most of the NTK/AC Delco ones they were properly grounded internally and worked excellent. That is obvious since the new AFS75 sensors ARE NTKs now.

tbag_skywalker

www.getgmparts.com for Delphi sensors, basically the same thing as AC Delco.

They're usually cheaper than gmpartsdirect.com