1 0 Eaton-Spicer Differential Part for a Eaton-Spicer RD404 Recently Updated $961.54 USD RING PINION HYPOID GEAR SET RATIO 3.42 REAR SPICER RSP/RDP40, 41, RS/RA/RD344, 404, 405, 454 , 12 PINION TEETH, 1.95 IN SHAFT DIAMETER , 39 SPLINE , 15.4 IN RING OD , 41 RING... ConditionNewRear End3.42 ratioFits To Make(s)EATON-SPICERFits To Model(s)RD404Stock NumberSST 504055 MLS Number10836758CategoryDifferential Misc. Parts Last Updated10/31/2025 LocationPortland, OR, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info