Two sets of O2 sensors. Bought for a 1996 GMC Safari. Was having runability issues and codes were indicating it could be a bad O2 sensor. I replaced all 4 sensors with the set of Denso sensors and it didn't change anything. Several people then told me you have to use AC Delco sensors so I tried it and still no change. It turned out to be something totally unrelated. Shortly afterwards, I wrecked the van so I saved the sensors for my next van which got wrecked 6 months later. So both sets have low miles. $30 for both sets cash only.
Public meet up. Located in northeast Spokane