SKU:

43501901-Drum

Printer Brand:

Okidata

OEM Number:

43501901

Ink Color:

Black

Page Yield:

25,000 Pages

Printer Type:

Drum Unit

Condition:

New Compatible

Frequently Asked Questions

Why is this drum unit sold under the number 43501901 instead of a printer name?

Because the number is the exact identifier Oki assigns to this drum, and one drum serves several printers. The 43501901 works across the B4400, B4400n, B4500, B4500n, B4550, B4550n, B4600 and B4600n, so a single model name on the box would actually undersell it. If the drum coming out of your machine is stamped 43501901, this is its replacement — the number settles it faster than any model list.

Is this the toner cartridge, or something else?

Something else. On these Oki machines the toner cartridge and the drum unit are two separate parts: the toner holds the powder, and the 43501901 drum is the imaging surface that transfers the image to the page. This listing is the drum only. If your pages are fading because the toner is empty, a drum will not fix that — but if a fresh toner cartridge still leaves streaks and washed-out prints, the drum is the part that has worn out.

How long does one drum last?

The 43501901 is rated for up to 25,000 pages. In practice that means a drum typically outlives several toner cartridges, which is why it is priced and sold as a long-cycle part at $70.25 rather than an everyday consumable. Heavy coverage and constant stop-start short runs can shorten that life; steady longer runs get you closer to the rating.

What are the signs that the drum — not the toner — is the problem?

Vertical streaks or lines that repeat down the page, a gray background haze behind the text, faded patches that stay in the same place, and spots that recur at regular intervals. Those are drum-surface symptoms. A new toner cartridge will not clear them, because the image itself is being formed on a worn surface.

Is this a genuine Oki drum?

No — it is a compatible drum unit built to the 43501901 specification, not an Oki-branded part. It is covered by a one-year warranty and one-year free returns, with the terms spelled out on the shipping & returns page.

Where will my order come from, and who helps if I have a question?

Orders leave from warehouses in IL, PA, GA and CA, and our support team answers Monday to Friday, 9 AM to 5 PM CST. The full range of Oki consumables sits on the Okidata brand page.

About This Drum Unit (43501901)

This is the number-first way to replace the imaging drum in the Oki B4400–B4600 family: one black drum unit, part number 43501901, rated up to 25,000 pages, priced at $70.25. It exists for the moment a good toner cartridge stops producing clean pages — when the streaks and haze are coming from the drum surface itself. As a compatible unit it costs less than the branded equivalent, and it is backed by a one-year warranty with one-year free returns.