I have had good results using AC Delco O2 sensors on my LT5. On a recent search using Rock Auto, they don’t seem to carry AC sensors. I have used Bosch sensors but have been disappointed using them. Any other brands that you would use besides ACs?

Delphi, NTK, Denso?

 

Which delco sensor are you attempting to buy?

 

ULT,

Its AC Delco 25176708. I see Summit has 4 of them.

 

I've been running the AFS-74 which is a 3 delco wire heated O2

 

Just bought 2 AC Delco 213-632 on ebay.

 

Probably Bosch or perhaps NTK as AC Delco really just reboxes other manufacturers now.

 

I had used Bosch some years ago. Found that they had a tendency to produce inconsistent readings both in my 84 Xfire and my LT5. I would see strings of 0v readings in my datalogs while cruising. The ACs have never done that altho it seems as if I do need to swap them out on a regular basis. Maybe I should try Denso?

 

For some reason I always reach for NGK/NTK plugs and O2s.

 

Currently use NGK plugs. Have used Bosch O2s but found them to be unreliable over time. ACs much more consistent.

 

Never used Bosch except for WB- just economical compared to NTK and Denso.