This product includes five idle gears compatible with Okidata 320, 321, 390, 391, 420, 421, 490, 491, 520, 521, 590, 591, ML320, ML321, ML390, ML391, ML420, ML421, ML490, ML491, ML520, ML521, ML590, and ML591 printers.It is a compatible replacement part designed to support consistent paper feeding and internal mechanism alignment.OEM reference numbers include 51215901, 51228001, 51228101, and 51238501.
compatible new,tested in good working situation
package:1 piece Only
