4 0 Alliance R21-4N Rear Differential $1,100 USD Good used Alliance R21-4N Rear, rear Differential Assembly. 6.14 Ratio. 90 day guarantee for swap or refund ConditionUsedRear End6.14 ratioFits To Make(s)ALLIANCEFits To Model(s)R21-4NStock NumberRyd R21-4N/6.14/46 MLS Number13363031CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
4 0 Alliance R21-4N Rear Differential $850 USD Good used Alliance R21-4N Rear, rear Differential Assembly. 4.78 Ratio. 90 day guarantee for swap or refund, ConditionUsedRear End4.78 ratioFits To Make(s)ALLIANCEFits To Model(s)R21-4NStock NumberRyd R21-4N/4.78/41 MLS Number10310490CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info