View 0 Photos View 0 Videos Spicer RS404 Rear Differential Contact for price RS404 ratio 3.70 Rear differential locker: NO, Core Charge: 0.00, Ratio: 3.70 ConditionUsedRear End3.70 ratioFits To Make(s)SpicerFits To Model(s)RS404Stock NumberRS404370-P MLS Number11336354CategoryDifferentials, Rear Last Updated3/12/2026 LocationLouisville, KY, US Sold ByRiver City Truck Parts (855) 465-___ SHOWNUMBERCall Seller Email Seller Save More Info