3500 Series. Sierra; 2500. Silverado. Differential Carrier Bearing. Drive Axle Shaft Bearing. Exc.Ring Gear 10.50". Exc.Ring Gear 8.50". Exc.Ring Gear 8.625". GVW 8,600 Lbs. Ring Gear 9.50". Assembly - D. Differential Carrier. Drive Axle Shaft. Side S.