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Applications: 1957/67 F100 w/a 9" rear axle / No Ford Dealer or obsolete parts vendor has any.
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1968/72 F100 is not the same, because these trucks have 2 1/4" rear brakes, and...
There are two different 1968/72 F100 9" axleshafts...because...there are two different 9" rear axles.
One has 28 splines, the other has a 9 3/8" ring gear, 31 spline axleshafts and Traction-Lok. Only FIVE parts are the same as a 9 inch.
One pinion bearing, one pinion bearing cup, pilot bearing retainer, pinion seal & housing gasket. EVERYTHING else is different.