Genuine OEM Oki B4550n Toners

The OKI B4550n uses either 43502301 black toner or the larger 43502001 cartridge. Its 43501901 image drum is a separate part, so the toner and drum are chosen for different printer messages.

Toner Buzz carries genuine OKI toner in both sizes and the matching drum for this model. Select the toner size that matches your workload, or choose 43501901 when the machine specifically asks for an image drum.