Difrntal carrier. Rear. Device connecting Drive Shaft to Axle Shafts that allows for varied speeds of wheel rotation. From 05/2015. The Differential Carrier assembly is a housing that is used to hold all of the Differential components and includes those components (Differential side & pinion gears, the ring gear, shims, washers, bearings, pinion pin, clutches etc.). To 05/2015. ASSEMBLY, DIFFER. Center. TransAxle/motor.