O2 sensor question
I'm going to change the 2 "upstream" o2 sensors on my truck during my next oil change. I'm having trouble finding out what the correct part number is for the "direct replacement" Bosch sensors - 2 auto parts stores have different numbers, and I can't seem to find it on the Bosch web site. Also, does anyone have a recommendation for another brand that may be better? As always, thanks for the help!