1 0 Eaton D46-170HP Rear Differential for a 2008 Peterbilt 320 Newly Listed $2,895 USD D46-170 RR DIFFERENTIAL LOCKER, 4.56 RATIO USED TAKOUT., Serial#: HN02750812, Ratio: 4.56 ConditionUsedRear End4.56 ratioFits To Make(s)PeterbiltFits To Model(s)320Will Fit Year(s)2008Stock Number111725-4 MLS Number13989029CategoryDifferentials, Rear Last Updated11/19/2025 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info