View 8 Photos View 0 Videos 2015 Eaton S23-190 Rear Differential for a Peterbilt 579 $375 USD (USED) Eaton S23-190 Ratio: 2.53 Side Gear Splines: 46 W/ Locker: NO Cast#: 16J14 Ref# 515726 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part Number515726Stock Number25796334 MLS Number13616069CategoryDifferentials, Rear Last Updated5/31/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info