Transmission and Drivetrain: Application and ID

The Vehicle Certification (VC) label contains the manufacturer name, the month and year of manufacture, the certification statement, and the VIN. It also includes Gross Vehicle Weight Ratings (GVWR).

Transmission Code:

^ U - Automatic AOD, 4.6L engine
^ F - Automatic E4OD, 5.4L engine

Axle Code:

^ 19 - 3.55 non-limited slip, Expedition
^ 17 - 3.31 non-limited slip, Expedition
^ H9 - 3.55 limited slip, Expedition
^ H7 - 3.31 limited slip, Expedition
^ H6 - 3.73 limited slip, Expedition/Navigator






Vehicle Certification (VC) Label Example
The Vehicle Certification (VC) label is located in the driver door jamb. The first two digits of the axle code indicate the rear axle and the third digit refers to the axle, if so equipped.









Front Axle Identification Tag






Rear Axle Identification Tag






Axle Identification Tag Denoting Interchangeability
Affected Internally

CAUTION: The axle identification tag is the official service identifier. Do not damage the tag.

Always reinstall the tag after removing it for axle inspection/repair.
The plant code denotes a particular axle design, a specific ratio, and if it is a conventional or limited slip (Traction-Lok (R)) type. In addition, the plant code will not change as long as that particular axle assembly never undergoes an external design change. If, however, an internal design change takes place during the production life of the axle and that internal change affects parts interchangeability, a dash and numerical suffix is added to the plant code.
Note that the plant code in the front and rear axle identification tag illustrations is similar, but the illustration denoting interchangeability affected internally shows the addition of the suffix. This means that as an assembly both axles are interchangeable; however, internally they are different. Each axle requires different internal parts at the time of repair.