ZIKGM12-S-30 Open Differential Inner Gear Kit GM 12 Bolt Car / Truck 30 Spline
USA Standard spider gear kits offer OEM replacement quality at a low price. Spider gear kit Fits GM 12 bolt passenger car and truck open differential with 30 spline axles Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.