'03 1500 5.7l O2 sensors
 

I keep getting a error for the same 02 sensor over and over (2/2 location). I am figuring since I'm gonna be replacing that one, I might as well do all four right? does anyone have the part # for the sensors and are they all the same? thanks

03's only have two sensors not four. One upsteam and one downsteam and no..they are not the same part #.