Compatible Oki 43501901 Drum Unit (25,000 pages)
Replaces Oki 43501901 (435019) · SKU TS-OK43501901
25,000 pages, about 0.2¢ per page
Buying for the office? The price drops with quantity.
- 2 or more$50.34 eachsave 5%
- 4 or more$47.69 eachsave 10%
- 10 or more$47.51 eachsave 10%
Applied automatically in the cart. The break is per cartridge.
Orders of $300 or more get $10 off at checkout.
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- 90-day returns, including opened cartridges that are defective
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This compatible 43501901 drum unit is rated for about 25,000 pages and replaces the genuine Oki 43501901. It fits the Oki B4400, Oki B4400n and Oki B4500 and 5 other Oki models.
Will this fit my printer?
Fits 8 printer models. Pick yours to see everything else it takes.
- Oki B4400Uses 43501901, 43502301
- Oki B4400nUses 43501901, 43502301
- Oki B4500Uses 43501901, 43502301
- Oki B4500nUses 43501901, 43502301
- Oki B4550Uses 43501901, TYPE 9, 43502301
- Oki B4550nUses 43501901, TYPE 9, 43502301
- Oki B4600Uses 43501901, TYPE 9, 43502301
- Oki B4600nUses 43501901, 43502301
Find your cartridge
or pick your printer
Specifications
| Replaces OEM number | Oki 43501901 |
|---|---|
| Color | Black |
| Rated yield | 25,000 pages (Approx. yield per ISO/IEC 19752 / 19798 at 5% coverage (letter/A4)) |
| Yield class | Standard yield |
| Cost per page | 0.2¢ at our price |
| Chip | Not published by Oki |
| Build | Confirmed with the supplier before launch |
| Facts checked | 2026-09-23 by Dan Whitaker, Print Technician |
Specs from acmtech.com.
How to install it
- Open the cartridge door on the front of the printer.
- Pull the old cartridge straight out.
- Take the new cartridge out of its bag and rock it gently five or six times end to end.
- Pull the sealing tab straight out to remove the tape.
- Line the cartridge up with the guides inside the printer and push it in until it seats.
- Close the door and print a test page.
If something goes wrong
The printer does not recognize the cartridge
Power the printer down, reseat the cartridge, and make sure the contacts and chip are clean. If the message stays, check whether a firmware update changed how the printer reads third-party chips.
Full guidePages come out blank or very light
Nine times out of ten the sealing tape is still in place or the cartridge needs rocking to spread the toner. Pull the cartridge, check the tape, rock it gently, and reinstall.
Full guideStreaks or a repeating mark down the page
Streaks usually come from the drum, not the toner. Clean the corona wire if your printer has one, and check the drum count before replacing the cartridge again.
Full guideQuestions about the 43501901
How many pages does a 43501901 print?
About 25,000 pages. The rating follows Approx. yield per ISO/IEC 19752 / 19798 at 5% coverage (letter/A4). That is a rated average, so heavy graphics use toner faster than plain text.
What if it does not work in my printer?
Send it back. Returns are open for 90 days and that includes opened cartridges that are defective. Shipping is free both ways.
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