View 0 Photos View 0 Videos Meritor-Rockwell Rear Differential for a 2021 Western Star 4800 Recently Updated Contact for price 2021 WS 4800 CEMENT TRUCK MERITOR RT46-1604P REAR REAR, 4.56 RATIO, LOCKS, CHALMERS SUSPENSION, ABS, 54" SPREAD, 46000 LBS, Serial#: NA, Ratio: 4.56, Casting#: NA ConditionUsedRear End4.56 ratioFits To Make(s)Western StarFits To Model(s)4800Will Fit Year(s)2021Stock Number3811-WS-5 MLS Number13355785CategoryDifferentials, Rear Last Updated3/11/2026 LocationSTURGEON COUNTY, AB, Canada Sold ByBadger Truck Parts Ltd. (855) 624-___ SHOWNUMBERCall Seller Email Seller Save More Info