0 0 Alliance RT40-4S Front Differential Newly Listed $2,000 USD Remanufactured Alliance RT40-4S front, rear differential assembly. 2.28 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered ConditionRemanufacturedRear End2.28 ratioFits To Make(s)ALLIANCEFits To Model(s)RT40-4SStock NumberBP TRS RT40-4SF/2.2 MLS Number14050589CategoryDifferentials, Front Last Updated12/18/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info