0 0 2015 Eaton R23-190 Rear Differential for a Peterbilt 579 $375 USD (USED) Eaton R23-190 Ratio: 2.53 Side Gear Splines: 46 W/ Locker: NO Cast#: VERIFY Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25857893 MLS Number13790523CategoryDifferentials, Rear Last Updated9/6/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info