Set of 4 new, unused, uninstalled OEM hydraulic couplers and colored dust plugs for John Deere models 425, 445 and 455. Also used on all X700 series mowers including currnt models. Same couplers and plugs as used in BM17763 kits. These couplers thread into the mid mount valve body located near the operators right foot and are required to attach a front blade, snowblower, broom, loader, etc. The hydraulic couplers are manufactured by Pioneer and replaces John Deere part number AM115139.