Genuine OEM OKI B721dn Toners

The B721dn uses a toner cartridge and a separate maintenance kit, so the type of supply matters as much as the printer model. If you're addressing a fuser maintenance request, another black toner cartridge won't take care of that job.

Toner Buzz carries genuine OKI 45488801 and 45488901 black toner, along with the 45435101 fuser maintenance kit. Choose 45488901 for more pages per cartridge than 45488801, and keep the fuser kit for the printer's separate maintenance needs.