Right now my car has one ac delco o2 sensor and one bosch one. I might eb replacing both in the future and have heard that ac delco makes the best o2 sensor for slightly modded LT1s. If this is true where do you guys buy them? Hopefully not $80 a pop like the bosch ones are.

 

My last set: Almost $80 each for Delphis at napa. I just bought Densos for around 40 bucks each online this time around, Rockauto. I seem to fail them every couple thousand miles.

 

Go with the AC delcos you will run into problems if not

 

i just installed boch's from napa. they were dirt cheap,only like 40 something bucks for 2 of them. they dont really have any miles on them so i cant say how good they are though

 

Bosch have been problematic for many people. That's why the AC's are recommended.

 

DO NOT get NTK. I went through 4 of those MFers in a matter of weeks. Ended up getting some Borg Warner O2's off of ebay for 20 bucks a piece. No problems so far.