Ford F-150 axles are identified by a small tag attached to the differential casing on the rear axle in most cases. The only axles that are marked differently are ones made by Dana. The same markings are used but they are placed on the casing and the long shaft of the axle rather than the tag. The tag will tell the date the axle was made, the factory, the ratio, pinion gear, and model. All this information is needed when rebuilding or repairing the axle. Five sets of data are contained on the tag, or three sets will be stamped on the Dana.
Ryan R.
April 10, 2020
The ford f150 comes with different rear axle gearing combinations and the first 3 numbers on the tag will give you the gear ratio, if it says 3 55 then your gearing is 3.55.
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