Dana 50 Spider Gear Set 30-Spline ZIKD50-S-30

USA Standard Gear ZIKD50-S-30 is a complete open differential gear set for the Dana 50 with 30-spline axle shafts. It includes the two side gears, two pinion (spider) gears, the cross pin shaft, the cross pin bolt and the spider gear thrust washers, so you replace the whole set together instead of mixing worn and new gears.

The Dana 50 was used as a front axle under Ford F-250 and F-350 trucks, including the twin traction beam versions. Count the spline on your inner axle shaft before ordering; this set is for 30 spline only.

Replace the spider gears when you find chipped teeth or metal on the drain plug magnet, hear a clunk when the front hubs engage, or feel a bind in turns with the hubs locked. Worn thrust washers alone will cause excess gear lash that shows up as noise.

On the bench: pull the carrier from the housing, drive out the cross pin, and roll the pinion gears out of the case. Lube every gear and washer with gear oil as you install them, torque the cross pin bolt to spec, and refill the axle with the correct gear oil.