Browse Meritor-Rockwell RS20145R557 Rear Differentials for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 6 listings. Meritor-Rockwell RS20145R557 Rear Differential pricing ranges from $350 to $1,042 based on recent marketplace data. Filter by condition, price, or year to find the right Meritor-Rockwell RS20145R557 Rear Differential.