1 0 Eaton RA405 Rear Differential $850 USD Good used Eaton RA405 Rear, Rear Differential Assembly. 3.70 Ratio. 90 day guarantee for swap or refund ConditionUsedRear End3.70 ratioFits To Make(s)EATONFits To Model(s)RA405Stock NumberRyd RA405/3.70/41 MLS Number10669479CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info