Yukon Gear & Axle (YPKC9.25-S-31) Rear Spider Gear Kit for Chrysler 9.25 Differential 1 Year Warranty Higher Quality Than OEM Engineered to Fit Specific Differential Applications. Fit Chrysler 9.25 inch rear with open differential. Not compatible with '07 & up 9.25 inch front differentials Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers