View 0 Photos View 0 Videos 2019 Spicer S23-190D Rear Differential for a Peterbilt 579 $375 USD (USED) Spicer S23-190D Ratio: 2.69 Side Gear Splines: 46 W/ Locker: YES Cast#: - ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Stock Number25886243 MLS Number14014847CategoryDifferentials, Rear Last Updated2/7/2026 LocationKansas City, MO, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info