Shop used Meritor-Rockwell MR20143 Rear Differentials on MyLittleSalesman.com . Compare active listings with prices from $550 to $995. Sellers include Manders Diesel, Rocky Mountain Truck Parts, Holst Truck Parts, and more. Filter by condition, price, or year to find the Meritor-Rockwell MR20143 Rear Differential that fits your job.