Hot Summer Deals
Dive into summer with epic deals up to 73%.
Plus, enjoy FREE shipping storewide.

Special Offers

FREE Priority Shipping on Ink and Toner | Hot Summer Deals

Learn more

Engineered for Sustainability

HP 21 Black Original Ink Cartridge, C9351AN#140

Color

black
Black
  • Choose the #1 brand for the #1 value
  • Up to 190 pages
  • Cartridges ship in packaging that is 100% recyclableSee all Specs
See Compatible Printers

3% back in HP Rewards
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.

Take pride in high-quality prints with Original HP Ink.

The choice you can trust to help avoid reprints and wasted supplies. Choose Original HP Supplies, designed for reliability and consistency.

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

Offers

FREE Priority Shipping on Ink and Toner

Hot Summer Deals

Hurry, these deals end soon. FREE shipping storewide.

HP 21 Black Original Ink Cartridge, C9351AN#140 is rated 4.5 out of 5 by 752.
  • y_2024, m_7, d_12, h_7
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_287, tr_465
  • loc_en_US, sid_C9351AN, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getAggregateRating, 4ms
  • REVIEWS, PRODUCT
Rated 5 out of 5 by Anonymous from Terrible The cartridge doesn't last long, and is expensive.
Date published: 2024-06-09
Rated 1 out of 5 by Mr homka from You sold me the wrong one I could not use#21i had to reorder #56 you sold me the wrong one
Date published: 2024-03-02
Rated 5 out of 5 by Stephen J L from Gotta buy HP! The only cartridge that works well with my printer.
Date published: 2023-12-27
Rated 1 out of 5 by MDuss laptop from Stay Away From HP I ordered two HP21 ink cartridges. When I received my order I received one HP21 and one HP61. I got online and try as I might I could not find a number to call. I finally found a return request. I filled it out and three days later I got a response requesting I return the incorrect cartridge. That was not happening and I sent a response stating that. In about two days I received shipping info. No other response whatsoever. I am finished with HP..
Date published: 2023-12-18
Rated 4 out of 5 by Customer_99 from HP Printer Cartridge Fast shipping and really appreciated the cartridge recycle bag! Product box was mangled. Thanks!
Date published: 2023-10-06
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
  • y_2024, m_7, d_12, h_7
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_287, tr_465
  • loc_en_US, sid_C9351AN, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 4ms
  • REVIEWS, PRODUCT

I have a HP Deskjet 2210 - Do you have a high yield ink cartridge that will work in this printer? I usually purchase HP21 cartridges for the black

Asked by: Alexann
There is not currently a high yield option for that unit. Just the standard 21 black and 22 tricolor options are available at this time.
Answered by: HP Live Expert James
Date published: 2024-02-14

what is the expiration date

Asked by: M.j.
HP cartridges do not have expiration dates. They will come with a best-if-used-by date. That date is determined by when the cartridge was manufactured and will appear on the product box. As this will vary, no information is available on what the Best By date would be on an individual cartridge.
Answered by: HP Team Grant
Date published: 2023-09-21

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

Will this work for my 2140 fax machine

Asked by: Valdez
Thank you for your question, yes HP 21 will work with the HP Deskjet F2140.
Answered by: HP Team Daniel
Date published: 2024-05-07

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
  • y_2024, m_7, d_12, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_10
  • loc_en_US, sid_C9351AN, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 4ms
  • QUESTIONS, PRODUCT
Return and exchange information
HP.com will accept returns or exchanges for this product up to 30 days from the date of delivery. A 15% restocking fee may apply. For details, please visit: https://www.hp.com/us-en/shop/cv/returnsandexchanges.