I have ordered O 2 sensors for my Ford Taurus from Global Automotive of Miami. While I was about to install my new sensors one of its pin was was bent ( got picture of it). As my Y pipe was already removed and it was on Christmas Eve, I took the decision to fix the pin by dismantling the connector. I have completed the installation and since then I got another fault code P 0136. One on the causes is "Open in circuit resistance" caused by corrosion in the connector. In another word it's a bad contact. Therefore, I will have to replace this new O 2 sensor again at my own expense.
If you do business with Global Automotive of Miami be ready for some unpleasant surprises.