6 0 2015 Meritor RD20145 Front Differential for a Peterbilt 579 $1,015 USD (USED) Meritor RD20145 Ratio: 3.21 Side Gear Splines: 41 W/ Locker: NO Cast#: 3200-M-1859 Ref# 3200-M-1859 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part Number3200-M-1859Stock Number25660452 MLS Number13198410CategoryDifferentials, Front Last Updated11/14/2025 LocationDes Moines, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info