; HomeHeavy Duty Truck PartsDifferentials & Differential PartsDiff Misc PartsMeritor/RockwellRR20-145Used 2004 Meritor/Rockwell RR20-145 Diff Misc Part Used 2004 Meritor/Rockwell RR20-145 Diff Misc Part Unfortunately this part is temporarily unavailable. Search for Part# RR20-145 View other Meritor/Rockwell RR20-145 Diff Misc Parts