DANA 1.60 Ratio Upper Gear Set 810211XThis is a shifting Model 80 upper gear setThis gear set contains a 4M4 26 tooth stem gear, a 17 tooth 810213X forward gear, and a 17 tooth 810214X reverse gearThe two drive gears in this set include new installed bushingsThis is the most common gear set used in a Chrysler Dana combinationWhen replacing this gear set the D23M1 clutch collar should also be replacedThese gears are only serviced in this set and are not sold seperately