All of our new parts are aftermarket replacements. Replaces John Deere OEM Number(s) JD185LRS, JD18-5LRS, JD185LRIB. Replaces Mfg Number(s) 2003JD18-5LRS, 2003JD185LRIB, 2003-JD185LRIB, 2003-JD185LRS. Compatible with John Deere New Universal (NU) Moldboard Plow(s) NU1036, NU1046, NU1048. Bolt Hole Dimensions: (1) 1/2″ x (4) 7/16″. Plow Share Type: Rib Share. All States Ag Parts Item No.