Welcome to the Okidata B-420DN product page. Here you can find information and pricing for your Okidata 43979001 Genuine Okidata Drum unit. Easy online ordering of your 43979201 Genuine Okidata High-Yield Toner Cartridge, 43979201, 43979101, 43979001, can be completed from this page. Tonerprice.com backs all of our cartridges with our exclusive warranty. As always, we provide free ground shipping on orders over $75 within the contiguous United States from 5 warehouses nationwide.