The FS-4000DN uses TK-332 black toner, but it also has separate drum, developer, fuser, waste, and maintenance items. Those parts are not alternate toner choices.
Toner Buzz carries genuine Kyocera TK-332 toner along with DK-310, DV-322, FK-320U, MK-320, and the listed waste unit. Match the printer's notice to the part type first, then confirm the complete code.
Guaranteed fit for Kyocera FS-4000DN
The products below are genuine OEM Kyocera Supplies made for the Kyocera FS-4000DN.