Photos show the compatible cartridge. Images marked OEM show the genuine Lexmark product for reference.
Compatible Lexmark 521 Black Toner Cartridge (6,000 pages)
Replaces Lexmark 521 (52D1000) · SKU TS-LX521
6,000 pages, about 0.8¢ per page
Orders of $300 or more get $10 off at checkout.
We email a one-click reorder link when it's time. You only pay when you reorder.
- Free shipping on every order
- Lifetime satisfaction guarantee
- 90-day returns, including opened cartridges that are defective
- Printer damage protection on every cartridge we sell
This compatible 521 prints about 6,000 pages at roughly 0.8¢ a page and replaces the genuine Lexmark 521. It fits the Lexmark MS710dn, Lexmark MS710n and Lexmark MS711dn and 10 other Lexmark models.
Will this fit my printer?
Fits 13 printer models. Pick yours to see everything else it takes.
- Lexmark MS710dnUses 520Z, 521H, 521
- Lexmark MS710nUses 521, 521H
- Lexmark MS711dnUses 520Z, 521X, 521 +1
- Lexmark MS810deUses 520Z, 521H, 521
- Lexmark MS810dnUses 520Z, 521H, 521
- Lexmark MS810dtnUses 520Z, 521
- Lexmark MS810nUses 520Z, 521, 521H
- Lexmark MS811dnsUses 521
- Lexmark MS811dtnUses 520Z, 521X, 521H +1
- Lexmark MS811nUses 520Z, 521X, 521 +1
- Lexmark MS812deUses 520Z, 521X, 521 +1
- Lexmark MS812dnUses 520Z, 521X, 521 +1
- Lexmark MS812dtnUses 520Z, 521X, 521 +1
Find your cartridge
or pick your printer
Specifications
| Replaces OEM number | Lexmark 521 |
|---|---|
| Color | Black |
| Rated yield | 6,000 pages (Approx. yield per ISO/IEC 19752 / 19798 at 5% coverage (letter/A4)) |
| Yield class | Standard yield |
| Cost per page | 0.8¢ at our price |
| Chip | Not published by Lexmark |
| 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 521
How many pages does a 521 print?
About 6,000 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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