Originally Posted by elm3
You are correct. So if you are looking at the engine, number one cylinder is the one on your left as you are looking at it. So bank 1 is on your left. If you need to change the upstream O2 sensor on bank 1, it is the one on your left, before the cats. Hope that this makes sense. Let me know if you need help, I don not mind.
Yep, makes perfect sense, thanks! And I may still hit you up for an extra hand when I do this... I may have lost my O2 socket so extra tools may help