1 0 Eaton RT480 Rear Differential for a 1987 Peterbilt 379 $1,695 USD GOOD INSPECTED TAKEOUT, 2 SPEED. 90 DAY WARRANTY EXCHANGE, Ratio: 4.56 ConditionUsedRear End4.56 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1987Part NumberRT485Stock Number52922-9 MLS Number11477862CategoryDifferentials, Rear Last Updated12/18/2023 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info