Set of 4, brand new, unused, uninstalled OEM hydraulic coupler male dust plugs for John Deere compact tractor models 2210, 2320, 2520, 2720, 4010, 4100 and 4115 These plugs are necessary to keep dust and debris out of the hydraulics couplers which could contaminate the hydraulic oil. Color coding helps assists in correctly matching up hoses to the proper hydraulic circuit.  Mates to the couplers on the hydraulic mid mount valve located near the operators right foot. Replaces John Deere part numbers M132031, M132032, M132034 and M85099