Sierra; 9.50" Ring Gear; 3.73 Ratio. Sierra; 9.76" Ring Gear. Silverado. A single complete drive axle assembly, used on vehicles that utilize dependent suspension systems, that includes a Differential and drive axles to deliver power to the wheels of a vehicle in order to drive the vehicle. Part included axle assembly. The Housing of a Differential that holds the gears, pinions, Differential case, etc. Beam Axle Assembly. Carrier ASSEMBLY. Case. Drive Axle Assembly. Live Axle Assembly. Rigid Axle Assembly. Side cover. Solid Axle Assembly. Spacer.