[tobiasgriffith]

I already returned that parts and, you were right, they were not the original manufacturer parts.
For now, I'm holding off on buying the new oxygen sensor (manufacturer part) because I'm not so sure that this was the real problem with the car now. Do you think this is ok? Or should I change the Oxygen sensor anyways. I don't remember the exact code it gave but it said something like, "bank 1 too lean".

I will drive it a couple more days and see what's happening.

Thanks again for all your help.