Front O2 sensor
 

Well the O2 plug came out and the threads are messed up and flatten. I haven't checked to see if the threads on the pipe are messed up also. Are they strong enough to not strip like the O2?

The sensor is going to have the weaker threads. You should be ok, if not get a tap and die from harbor freight to fix. Though I doubt you'll need it.

http://www.irwin.com/tools/taps-dies...-plug-taps-hcs

18 mm - 1.50

I had to tap out the threads on a used set of V&H pipes I bought. Easy to do, Just take your time.

Front O2 sensor
 

If it is the sensor that's buggered up and it's one of the larger 2 wire sensors, I have 2 extras I aquired with some other parts and can't use. Your welcome to have them if you need them.
Shoot me a message if you need them.
Doug

Using tools from Harbor Freight is just asking for problems.

this is what i was thinking wheni was reading the above post. most Harbor Freight stuff is junk. ok place for sandpaper and maybe throwaway stuff.

I suggested harbor freight because it sounded like a one time use for this application. If you regularly do this obviously don't buy harbor freight.