View 5 Photos View 0 Videos Meritor-Rockwell MR2014X4DCRNN603 Rear Axle Assembly for a 2020 Western Star 4900EX Recently Updated Contact for price (Used) 2020 Western Star 4900EX, COMPLETE REAR REAR TANDEM- Make : Meritor/Rockwell, Model: MR2014X4DCRNN603, Serial Number: FOR05728253, Custom Number: C11-00043-786, Ratio: 3.90, Hub Bolts... ConditionUsedRear End3.90 ratioFits To Make(s)Western StarFits To Model(s)4900EXWill Fit Year(s)2020Stock NumberP-41456 MLS Number11922390CategoryAxle Assemblies, Rear Last Updated3/12/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info