The Aeroflow Performance 9" Ford overhaul kit is the only kit required to completely overhaul your ford 9" differential. It includes pinion pilot, pinion shaft, pinion nut, pinion seal, gasket, shims, crush collar, sealant, and gear marking grease, brush and Loctite. Ring gear bolts not included. Both the 28 spline and the 31 spline come with the carrier bearing. The 35 spline kit comes with Carrier bearing, Outer pinion bearing and Large "Daytona" inner pinion bearing
NOTE: Aeroflow 9" full spools use overhaul kit AF5076-1003, even if they are a 28-spline spool. This contains the larger I.D. standard O.D. carrier bearings and pinion bearings needed for use with the full spools.