What Brand of O2 Sensor Do You Use?

I have used Bosch O2 sensors in the past. Does anyone have any preferences as far as which O2 sensor works well in aLesabre (1997)? They probably are all about the same. I believe it has a 3 wire sensor, so it is heated.

Oe is always the best, Bosch replacement is 2cnd choice.

^Agree

I've run bosch O2's in my SI cars without any trouble just because they are cheaper than OEM quality stuff. This is not the case with spark plugs, you want AC Delcos only, and especially not bosch as they don't seem to cooperate with the 3800.

Agreeing maxwedge and alibi, AC Delco is the prefered choice.