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Engineered for Sustainability

HP 21 Black Original Ink Cartridge, C9351AN#140

Color

black
Black
See Compatible Printers

Earn 1X HP Rewards Points
Product # C9351AN#140
More than 50% of Original HP Ink Cartridges are made with recycled ocean-bound plastic.[10]
Want more pages, great reliability, and amazing value? You want original HP inks.

Why buy original HP ink?

Get up to twice as many pages vs. with refills¹ Ensure that your printing is right the first time and every time.

Laser-quality black text

Pigmented black inks provide crisp sharp text for your letters and reports. Keep your documents for a long-term reference. Text remains clear longer than many plain papers. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.

Reliable printed results

HP inkjet printing supplies and printers are designed to produce consistent results every time. Results you can count on across a broad range of plain papers and speciality media. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.

Easy to use

Supplies are easy to select, replace, and install. Save time and money with on-screen ink-level indicator in your printer software. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.

Technical details

Color(s) of print cartridges

Black

Page yield footnote

Tested in HP PSC 1410 All-in-One. Approximate average based on ISO/IEC 24711 or HP testing methodology and continuous printing. Actual yield varies considerably based on content of printed pages and other factors. For details see http://www.hp.com/go/learnaboutsupplies.

Ink drop

17 pl

Compatible ink types

Pigment-based

Operating temperature range

59 to 95°F

Storage temperature range

5 to 95°F

Operating humidity range

5 to 95% RH

Storage humidity

5 to 95% RH

Recycled content in cartridge

55%

Package dimensions (W x D x H)

4.49 x 1.43 x 4.05 in

Package weight

0.13 lb

Warranty

HP’s ink cartridges and printheads are warranted to be free from defects in materials and workmanship during the period of the warranty.

What's in the box

Ink cartridge

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HP 21 Black Original Ink Cartridge, C9351AN#140 is rated 4.5 out of 5 by 739.
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Rated 5 out of 5 by BlackInkBuyer from It's Black Ink It's Black Ink
Date published: 2023-06-29
Rated 5 out of 5 by Ggtexas from It was easy to find this ink in the website and easy to order. Good price Easy to order
Date published: 2023-05-29
Rated 5 out of 5 by Jacquelove from Wonderful price and prints! Thanks a bunch! I wanted a fresh cartridge so I can print my documents. I am very pleased with the quality of the ink and the price for it was amazing.
Date published: 2023-04-26
Rated 5 out of 5 by Bette from Old HP things that still work beautifully. Fast sedvice.
Date published: 2023-02-22
Rated 2 out of 5 by WilliamD from Too Codtly Dependable quality but too costly.
Date published: 2023-02-13
Rated 5 out of 5 by househusband from nice ink good quality ink for my old printer
Date published: 2023-02-08
Rated 5 out of 5 by Dee Kieduk from I am overly pleased that i was able to find black #21 for my HP Printer. Thank you HP support team Excellent customer service
Date published: 2023-02-07
Rated 5 out of 5 by Mario L from HP 21 Blank ink cartridge replacement Good quality ink
Date published: 2023-02-01
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I have an older Officejet 5510v. I need to find replacement ink in black and tri colors what is the number I should order. I have gotten 56 and 57 before, but no one seems to carry any longer

Asked by: Moehegan1
Thank you for your question! The HP 56 and 57 ink is showing as currently available here at HP.com.
Answered by: HP Team Grant
Date published: 2023-05-27

Whats going on w/HP21 Ink cartridges? I purchased one 3/9 fr a local Walmart that didn't work & they wouldn't take it back. I traveled to buy another one fr a office supply store 45 min fr where I live. That one worked but stopped 4/10 - less than 50 pgs.

Asked by: Girl21
Our apologies for the issues with this HP product! Please visit our HP Support Page for help in resolving this technical issue. Online Support: For technical support with this product, visit HP Customer Support http://support.hp.com. Social Media Support: To find solutions, ask questions, and share tips, join us on the HP Support Community at community.hp.com, on Twitter at twitter.com/HPSupport, and on Facebook at facebook.com/HPSupport.
Answered by: HP Team Grant
Date published: 2023-05-27

Does your HP21 Black Ink Cartridge still fit an HP Deskjet 335 All- In-One Printer?

Asked by: buddy115
Thank you for your question! Yes the HP Deskjet F335 is compatible with the HP 21 black and 22 color cartridge. Thank you for being an HP customer.
Answered by: HP Team Grant
Date published: 2023-05-27

Is this product the same as C9351A

Asked by: Anonymous
Hello. Thanks for your question. Yes, this HP 21 black ink cartridge is the same as the C9351A.
Answered by: HP Live Expert Cheri
Date published: 2023-05-27

Looking to purchase a basic, cheap printer that uses the HP 21/22 Ink. I have a huge surplus of ink but old printer is broken. What printers use HP 21/22?

Asked by: BytheBook
Thank you for your question! Unfortunately, no HP printers available currently for purchase use the HP 21/22 ink cartridges.
Answered by: HP Team Grant
Date published: 2023-05-27

Can I use 2 #21 black cartridges instead of one #21 black and one #22 tricolor in my HP desk jet printer F4180?

Asked by: Anonymous
Thank you for your question! No, you can print using only the black cartridge, but when two cartridges are installed there must be a black cartridge and a color cartridge in the correct slots.
Answered by: HP Team Grant
Date published: 2023-05-27

what is the expiration date

Asked by: M.j.
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Return and exchange information
HP.com will accept returns or exchanges for this product up to 30 days after delivery. A restocking fee may apply. For details, please visit: https://www.hp.com/us-en/shop/cv/returnsandexchanges.