View 0 Photos View 0 Videos Eaton RS451 Rear Differential $1,750 USD Remanufactured Eaton RS451 rear, rear differential assembly. 3.90 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered ConditionRemanufacturedRear End3.90 ratioFits To Make(s)EATONFits To Model(s)RS451Stock NumberBP TRS RS451/3.90 MLS Number14050403CategoryDifferentials, Rear Last Updated12/18/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info