FORD 2013 Flex v.4 - Manual (Page 374)

TRANSMISSION CODE DESIGNATION
You can find a transmission code on
the Safety Compliance Certification
Label. The following table tells you
which transmission each code
represents.
Description Code
6-speed automatic transmission (6F50) J
6-speed automatic transmission (6F55) G
Capacities and Specifications 373
2013 Flex (471)
Owners Guide gf, 4th Printing, December 2012
USA (fus)