Used John Deere Tractor Duals/Spacers - Dual Hubs The source equipment for this component: John Deere JD 4840 Tractor Available at Missouri Tractor Parts in Sikeston, MO. This component has been removed from the equipment and has been cleaned and inspected. It is available for immediate shipment. Item ships via freight carrier, for a freight quote or additional information call to speak to a sales rep about this unit. Please reference number CP-3441. Applicable sales tax will be charged.