I have to find the O2 sensor on my car but i have no clue what it looks like. I know it is located on the manifold, and it could be on eather side. I have looked it up in my book and that doesn't give me any help eather, i am at a loss. I also know it can be on eather side. I have a 5.7L engine and i am replacing the sensor because i fail my emission test. Any help would be great. Thanks

Driver's side manifold, just above where the y-pipe connects, on the forward side.

if I remember right, its a 13/16 or 15/16 wrench

Negative, it is 7/8.

dang brain