HP 125A Toner Cartridges – CB540A–CB543A

Castle Ink sells compatible HP 125A toner cartridges: 125A black (CB540A), cyan (CB541A), yellow (CB542A) and magenta (CB543A) singles and a 4-pack. They fit the HP Color LaserJet CP1215, CP1515n, CP1518ni and CM1312 MFP. Each cartridge is newly manufactured from new components, filled with fresh toner and print-tested. Orders placed by 4 PM ET ship the same business day, shipping is free over $50, and every cartridge is covered by our 1-year 100% satisfaction guarantee.

Firmware note: this printer generation does not block third-party toner, but keeping automatic firmware updates off is still the safe default.

Not sure which cartridge your printer takes? Use our Find Ink by Printer lookup.

5 products

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  • HP CB540-543 Laser Toner 4-pack (125A)
    $295.95
    $179.95
  • HP CB540A Black Toner Cartridge (125A)
    $89.95
    $49.95
  • HP CB541A Cyan Toner Cartridge (125A)
    $49.95
    $49.95
  • HP CB543A Magenta Toner Cartridge (125A)
    $49.95
    $49.95
  • HP CB542A Yellow Toner Cartridge (125A)
    $49.95
    $49.95

HP 125A Toner: Common Questions

How many pages does an HP 125A cartridge print?

125A prints about 2,200 pages black and 1,400 per color. HP makes only one size for these printers, and the cartridges have the drum built in, so there is no separate drum to buy.

Which printers use HP 125A toner?

HP Color LaserJet CP1215, CP1515n, CP1518ni, CM1312 MFP, CM1312nfi MFP. Our Find Ink by Printer page has a guide for each model.

Will compatible HP 125A toner work in my printer?

Yes. Our cartridges are new, not refilled, and install like an original. Keep automatic firmware updates off so a future HP update can't block third-party toner. If a cartridge from us isn't recognized, contact us and we'll replace or refund it under our 1-year guarantee.

When should I replace an HP 125A cartridge?

When the printer reports it empty or pages start to fade or streak. Shaking the cartridge gently side to side can squeeze out a few more pages, but once print quality drops it is time for a new one. Replace only the color that has run out; the others keep working.

More help: All HP toner cartridges · Find toner by printer. Updated October 2026 by William Elward, founder of Castle Ink (in business since 2005).