4 0 Spicer J190-S Rear Differential $750 USD Good used Spicer J190-S rear, rear differential assembly. 4.78 ratio. 90 day guarantee for swap or refund ConditionUsedRear End4.78 ratioFits To Make(s)SPICERFits To Model(s)J190-SStock NumberRyd J190-S/4.78/39 MLS Number13162504CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info