2004 TSX Sensor Harness
 

I have this dangling cable from the underside of my car. I think it is the O2 sensor. I searched it up and I think the part that broke was 36538-RAA-A12. Do I need any other parts aside from this to reattach it back to my car? Do I need 36535-RAA-A02 and 36535-RAA-A11 too?

Issue solved. The two additional parts are the clips that attach to the harness and wire. These three parts are all you need if you are missing the whole "set". In my case, I still had my clips attached to my broken harness, so I am not sure if the clips were two different parts, or they were the same clip.