F250. F350. w/o dual rear wheels. Bearing Only. Differential Pinion Bearing. Drive Ratio 3.08. Drive Ratio 3.31. Drive Ratio 3.55. Drive Ratio 3.73. Dual Rear Wheels. Exc.Dana Axle. Exc.Hub. Exc.Limited Slip Differential. Includes Pinion Bearing Cup. Limited Slip Differential. Outer race of Differential Pinion Bearing. Typically pressed into the Differential Housing. Rear Ring Gear 10.25". Rear Ring Gear 9.75". Ring Gear 10.25". Ring Gear 9.75". Serviced w/Differential Pinion Race. Single Rear Wheels. Assembly - Driving. Cup. Differential Race. Inner. Outer.