This product worked perfectly. The car I used it on took 4 different ones so it is important to know which one you need and where it goes. The item is described correctly. So know your part numbers. You can find the correct part number off any auto parts web site.
I had been having a problem with the NGK/NTK O2 sensors on my car. Finally decided to go with Bosch this time. So far I've had no issues. All my other NGK/NTK parts never have issues, but the O2 sensors seem to be a part they don't put their quality into. Bosch is quite a bit more expensive, but enough searching and I found it for a relatively cheap price from this ebay vendor.