[badcharger]

Hello everyone,
Upon searching the archives I have become utter confused as to the correct part number for the rear o2 sensor for a 2003 SVTF.

The two motorcraft part numbers I seem to run across are 5W6Z-9G444-BA and YS4Z9G444AA (DY1103). One is listed as an O2 sensor, the other is listed as a cat monitor. Does anyone know which is the correct part?

The front sensor also needs to be replaced, but I am pretty sure I have the right part number. 5C5Z9F472BA (DY1040).

Broke the rear motor mount bolt and the engine smashed both o2 sensors.

Thanks

 

[WD40]

Moved to "Ford Focus Technical Chat"

Front:
5C5Z9F472BA
Rear:
5W6Z-9G444-BA
^^^O2 sensor, also known as a Catalyst Monitor as you have found out.

From this thread:
http://www.focusfanatics.com/forum/showthread.php?t=82451

 

[badcharger]

Thank you WD40 for the info. Sorry about posting in the wrong section. I was looking for a SVT specific answer, and I guess I didn't think about putting it in the general techincal chat. I'll keep this in mind next time