front o2's vs. rear o2's
 

First, I have searched and there is way too many threads containing 'o2 sensor'



My question is:
Are the front and rear o2 sensors (the sensor itself) the same piece of hardware. If I broke a front o2 sensor during my header install, can I replace it with one from the rear that will no longer be used?

yes you can

Awesome. Thanks, and lets hope thats whats wrong.

how'd you manage to break a sensor?

when i was taking mine out of the stock manifolds, i stripped one and had to use one of the rears. works perfect.

I was being dumb because it was late, and I needed to finish so I could drive my car to work in the morning. I was using a pipe expander to make the collector on the driver side header round again. The shaft of the pipe expander got longer and longer and crunched the tip of the o2 sensor a little bit inside the header.

Turns out one of the spark plug wires was only on ONE click instead of TWO onto one of the coil packs. o2 sensor seems to be working, only threw codes p140 and p160 for the lack of rear o2's.