Genuine OEM OKI C331dn Toners

The C331dn uses one image drum assembly for all four toner colors, but that assembly is separate from the toner cartridges. An all-color drum isn't a bundle of black, cyan, magenta and yellow toner, so it's worth checking which supply your printer is asking for.

Toner Buzz carries genuine OKI individual toner colors, a four-color toner set and the separate all-color drum. Pick one toner cartridge for a single low color, or the set when you need black and all three colors; the drum is a separate maintenance choice.