1 0 Rockwell RD-20-143 Rear Differential, Ratio 3.25 $650 USD USED ROCKWELL 20-143 REAR DIFFERENTIAL ASSEMBLY, RATIO 3.25. ConditionUsedPart Number20-143Stock NumberS4089 MLS Number10107763CategoryDifferentials Last Updated4/7/2023 LocationPalmyra, PA, US Sold ByBoots and Hank's Truck Parts, Inc. (833) 396-___ SHOWNUMBERCall Seller Email Seller Save More Info