Browse Meritor-Rockwell RS21230 Rear Differentials on MyLittleSalesman.com and compare listings with prices from $1,150 to $1,250. Sellers include Holst Truck Parts, Garabedian Equipment, and Rocky Mountain Truck Parts. Filter by condition, price, or year to quickly narrow down to the right Meritor-Rockwell RS21230 Rear Differential.