Originally Posted by subford
The number F3TD-7869-AA is not a Ford part number. It looks like a Ford drawing number or an engineering number.
Yes, it is an engineering part number. Always prefix-base-suffix.
The prefix indicates the model year and possibly car line the part was released for.
The base part number is the same for ALL applications (and engine control module is a 12A650).
The suffix indicates revision or different manufacturers.
Replacement parts may not use the exact same number, but the base part number (7869) is usually in there.
EDIT : 99% certain that a 7869 is a transmission cooler.