This is another item the potential buyer will have to confirm the fit. It is for a Dana 50 or 60 front axle with parts list #'s 4A through 4U, but not 4V through 4Z. So go to the page at Documentation/Driveline/Axles & Differentials and then the Front tab followed by the Application tab. But you will need the tag # off the diff.
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI