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Discussion Starter #1
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
 

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The Librarian
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Discussion Starter #3
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
 
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