HP 21 Black Inkjet Print Cartridge

The HP 21 Black Inkjet Cartridge (C9351AN) provides impressive, photo-quality color, and exceptional reliability

By Hewlett Packard

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Description & Features+

The HP 21 Black Inkjet Cartridge (C9351AN) provides
impressive, photo-quality color, and exceptional reliability.
Delivering consistently clear and crisp photos and images,
this cartridge is perfect for your everyday printing needs.
Built with 416 nozzle heads, this inkjet print cartridge produces
approximately 190 professional looking, crisp pages. The pigment
based ink dries quickly and doesn't blot. Compatible with HP
OfficeJet All-in-One series printers, this black inkjet cartridge
is ideal for high-quality printing.
• HP black inkjet cartridge
• 190 page yield
• Compatible with HP OfficeJet All-in-One Series printers
• Delivers clear, crisp photos, and images
• Product Type: Ink Catridge


Available for Shipping to Canada Post
Assembled Height
1.43 in
Assembled Length
4.49 in
Assembled Weight
.128 lb
Assembled Width
4.05 in
Hewlett Packard
Product Identifiers
Walmart Item #
30018555, 31049600
Model #

Return Policy+

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 > Return Policy

You can return this item within 90 days from the day you receive your online order.

There are two easy ways to return this item:

  • Return this item to a Walmart store
  • Return this item by mail

From the Manufacturer +

Ratings & Reviews+

HP 21 Black Inkjet Print Cartridge is rated 4.4 out of 5 by 109.
Rated 2 out of 5 by from Not so much.. I have the F380, dont print a great deal because of the cost of ink, The 380 is a good all-in-one so I have kept it, didnt dawn on me it might be the ink cartridge that's NOT SO GOOD. No more than I print it might dry up before I use it all anyway, dont take the chance.
Date published: 2010-09-01
Rated 4 out of 5 by from HP Ink Cartridges I seem to use a lot of black ink with my printer as I print off a lot of e-mails to pass the hard copy to family. I make this purchase often so I was glad to catch it on sale! This old HP printer keeps on going (as long as I can still get cartridges for it!)
Date published: 2016-04-26
Rated 1 out of 5 by from Too expensive!! I am seriously considering getting a new printer made buy a company other than HP as I am so tired of wasting so much money on ink. Within the last year or so, this black ink cartridge(as well as the tri-color cartridge) have gone up significantly in price and it seems as though there is less ink in the cartridges to begin with. I'm a student and I don't do a ridiculous amount of printing but it seems as though I'm having to pick up a new ink cartridge more often than I used to. Other than that, the quality of the ink is just fine.
Date published: 2016-01-25
Rated 5 out of 5 by from Best value. It is so easy to refill ink cartridges, but can get dry if not used right. I would recommend to anyone that uses their printer a lot and want to save money on buying cartridges.
Date published: 2012-07-10
Rated 5 out of 5 by from Perfect!! This product came very fast and it is excellent, Thank you!
Date published: 2012-01-19
Rated 1 out of 5 by from You're not really saving money You don't really save money by buying the cheaper cartridge, you're wasting money. I hardly use my printer and it ran out of ink in less than a few months. I can honestly say that it was a waste; for $5 more it would have been well worth it to upgrade.
Date published: 2010-09-01
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