Carrier housing. DIFFERENTIAL COMPONENTS. Rear. W/AWD. Device connecting Drive Shaft to Axle Shafts that allows for varied speeds of wheel rotation. 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.). Axle ASSEMBLY. Center. HOUSING ASSEMBLY - WHEEL Drive.