If you look at the page on Documentation/Interior/Seats & Seat Tracks and then the Illustrations tab & then the Seat Illustrations tab you'll see several illustrations, with the last being for your seat/truck. And there's a "62430" shown.
Then if you go to the Part Numbers tab you'll find the list of parts, but I've pulled the info on 62430 out, below. Note that while the illustration shows 1 while the parts list says it take 2.

I can't explain that, but you might want to look and see if there's a place for another one? If so, you could search online for that part number.

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