I replaced Bank 2 Sensor 1 mine a couple of days ago and I was confused with all 4 Oxygen Sensors found on my 07' Ridgeline and which to replace. So I modified the diagram below with the sensors and the part numbers. I think this was handy in having me order the correct parts online. Again, I will attach and the diagram. I hope it will help someone. Plus, I used this video to help me with 07' Ridgeline Bank 2 Sensor 1 removal :Hey guys. I need to replace Bank 1 Sensor 1 oxygen sensor on my 07 RTX. Anyone can tell me where that's located? Driver side, passenger side? Is it hard to get to? Any general tips? If you have some sort of a diagram I would appreciate it.