All of our new parts are aftermarket replacements. Compatible with John Deere Tillage(s) 4200. Replaces John Deere OEM Number(s) A15596, A20895, A14885. Compatible with John Deere New Universal Series Plows: NU1036, NU1046, NU1048. Bolt Hole Dimensions: 7/16. All States Ag Parts Item No.