Browse Rockwell RD/RP-20-145 Axles & Differentials for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 9 listings. Rockwell RD/RP-20-145 pricing ranges from $1,500 to $2,000 based on recent marketplace data. Filter by condition, price, or year to find the right Rockwell RD/RP-20-145.