4 0 Alliance R20-4N Rear Differential $950 USD Good used Alliance R20-4N full locking Rear, rear Differential Assembly. 5.22 Ratio. 90 day guarantee for swap or refund ConditionUsedRear End5.22 ratioFits To Make(s)ALLIANCEFits To Model(s)R20-4NStock NumberRyd R20-4N/5.22/46 MLS Number13363022CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info