Amazon.com: OKI Toner Set for C6100 / C6150 / C5500MFP / MC560 Series Printers. Full Set of 4 High Yield Genuine OKI Toner Cartridges. 43865717 Yellow, 43865718 Magenta, 43865719 Cyan, 43865720 Black.
OKI C5550/C6100 Type C8 Magenta Toner Cartridge 43324418 - Sun Data Supply
Amazon.com: OKI C6100 & C6150 SERIES BLACK TONER CARTRIDGE, P/N 43865720 : Office Products
43324420 Black Toner For Okidata C5550 C6100 C6100n C6100dn C6100dtn C6100hdn | eBay