Big/Sky/Fly
370hssv vw6!s tu36v
I live in Montana, we don't have any emissions tests here. Those O2 sensors can be buggers.I don't have any of equipment to remove it. So I had to pay to replace it. When I didn't know my first o2 went bad from advanced . So I had to replace both my o2 sensors & cat. I used the warranty on upstream