HP 940 Ink Cartridges – 940XL Black, Cyan, Magenta, Yellow

Castle Ink sells remanufactured HP 940 ink cartridges in every size HP makes: 940XL black (C4906AN), cyan (C4907AN), magenta (C4908AN) and yellow (C4909AN) singles and a 940XL 4-pack. The XL cartridges replace the standard HP 940 in the same slots. They fit the HP OfficeJet Pro 8000, 8000 Wireless, 8500, 8500 Wireless, 8500A, 8500A Plus and 8500A Premium. Each cartridge is a remanufactured original HP shell, refilled and tested in the U.S. 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: keep automatic firmware updates turned off on your printer so a future update can't block third-party cartridges. If the printer shows a “non-genuine ink” message, choose Continue or OK; printing is not blocked.

Need the details first? Read What ink does the OfficeJet Pro 8500A use?

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HP 940 Ink: Common Questions

What is the difference between the standard and XL HP 940 cartridges?

HP 940 black prints about 1,000 pages and each 940 color about 900; 940XL black prints about 2,200 pages and each 940XL color about 1,400. They share the same cartridge body and slot, so you can move between sizes freely.

Which printers use HP 940 ink?

HP OfficeJet Pro 8000, 8000 Wireless, 8500, 8500 Wireless, 8500A, 8500A Plus, 8500A Premium. Our Find Ink by Printer page has a guide for each model.

Will remanufactured HP 940 cartridges work in my printer?

Yes. These printers predate HP+ and HP's cartridge-blocking firmware, so a remanufactured cartridge installs and prints like an original. If the printer shows a non-genuine-ink message, choose OK or Continue. If a cartridge from us still isn't recognized, contact us and we'll replace or refund it under our 1-year guarantee.

Standard or XL: which should I buy?

XL in almost every case. The XL cartridges are the same physical size and fit the same slot, but hold more ink, so each printed page costs less. Standard cartridges only make sense if you print very rarely, since ink can dry out over long idle periods.

More help: What ink does the OfficeJet Pro 8500A use? · What ink does the OfficeJet Pro 8000 use? · What ink does the OfficeJet Pro 8500 use? · All HP ink cartridges · Find Ink by Printer. Updated October 2026 by William Elward, founder of Castle Ink (in business since 2005).