CLOSEOUT Presolite IBT 4101 U and S 4301 B C D drive gear
Prestolite new distributor drive gear fits IBT 4101 S and U , 4301 B C and D . May fit others. The original part number 90-597 also included the pin and "top hat" type shim washers. The pin is included but the "top hat" type shim washers are not. John Deere Reference #'s AT21721 AT21722 AT21351 We do include one 0.010" flat shim in case it's needed.
