View 0 Photos View 0 Videos 2015 Rockwell MD20-14X Front Differential for a Peterbilt 579 Recently Updated $1,250 USD GTO ConditionUsedRear End3.42 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number24657 MLS Number10535077CategoryDifferentials, Front Last Updated10/8/2026 LocationDouglas, GA, US Sold ByAmerican Truck Parts, Inc. (877) 254-___ SHOWNUMBERCall Seller Email Seller Save More Info