Remanufactured for HP 02 Black Ink Cartridge (C8721WN) | Castle Ink

HP 02 Black (C8721WN) at a glance: a black ink cartridge. Remanufactured: a genuine HP 02 cartridge, cleaned, refilled and print-tested. Fits the HP Photosmart 3110–3310, 8230/8250, C5180, C6180–C6280, C7180–C8180 and D6160–D7460. Backed by a 1-year 100% satisfaction guarantee; orders by 4 PM ET (Mon–Fri) ship the same day from Long Island, NY.

Key Facts

What's in the Box

• 1 × HP 02 Black (C8721WN) remanufactured ink cartridge

Compatible Printers (38 models)

• HP Photosmart 3110 / 3210 / 3310
• HP Photosmart 7360
• HP Photosmart 8230 / 8238 / 8250 / 8253
• HP Photosmart C5140 / C5150 / C5175 / C5180 / C5185 / C5190
• HP Photosmart C6150 / C6175 / C6180 / C6183 / C6188 / C6240 / C6250 / C6270 / C6280
• HP Photosmart C7150 / C7175 / C7180 / C7183 / C7250 / C7280 / C7283 / C8180
• HP Photosmart D6160 / D7145 / D7155 / D7160 / D7260 / D7360 / D7460

Don't mix these up: HP 02 is a six-color set (black, cyan, magenta, yellow, light cyan, light magenta) for these Photosmart models; the printhead is separate. It is not the same as HP 564 or HP 363.

Not sure? Look up your exact model on our Find Ink by Printer page, or contact us and we'll confirm the right cartridge for you.

Part Numbers & Also Known As

This cartridge replaces or is also searched for as: C8721WN, HP C8721WN, HP 02 black, HP02 black, 02 black ink, HP 02, HP02, C8721, Photosmart C6180 ink, Photosmart D7360 ink

Chips, Printer Messages & Installation

Installing: with the printer on, open the ink access door and wait for the carriage to stop. Remove the empty cartridge, unwrap the new one, pull off any protective tape without touching the copper contacts, and push it into the matching slot until it clicks. Close the door and let the printer finish its startup routine.

Ink level messages: the printer may show a "used" or "non-HP" cartridge notice, or an ink gauge that reads low or "?". Press OK to continue and judge by print quality, not the gauge.

Firmware updates: HP firmware updates have been known to block non-HP chips. Turn off automatic updates in the printer's settings or HP Smart before you install, and see how to keep HP firmware updates from blocking your ink.

Still stuck? See our guide to fixing a cartridge that isn't recognized or contact us and we'll make it right.

Remanufactured vs. Compatible vs. Original

Original (OEM) cartridges are new from the printer brand and cost the most. Remanufactured cartridges, like this one, start as genuine original shells (including the original chip) that are cleaned, refilled with high-quality ink and print-tested, so they fit and communicate like the original at a fraction of the price. Compatible cartridges are built new by a third party with their own chip. Castle Ink sells remanufactured inkjet cartridges and compatible (newly manufactured) toner.

Other Options for the Same Printers

• HP 02 Cyan Ink Cartridge (C8771WN)
• HP 02 Light Cyan Ink Cartridge (C8774WN)
• HP 02 Light Magenta Ink Cartridge (C8775WN)
• HP 02 Magenta Ink Cartridge (C8772WN)
• HP 02 Yellow Ink Cartridge (C8773WN)

Frequently Asked Questions

Do I need all six colors installed?

Yes. These printers need every color installed, but each is replaced on its own.

Will this void my printer warranty?

No. Under the U.S. Magnuson-Moss Warranty Act, a manufacturer can't void your printer warranty just because you used a third-party or remanufactured supply. If a non-original supply directly caused damage, that specific repair might not be covered.

How long can I store it?

Store it sealed, at room temperature and out of direct sunlight, and use it within about 24 months for best results. Once opened, install it promptly.

When will my order ship?

Orders placed by 4 PM ET, Monday through Friday, ship the same business day from Long Island, NY, by USPS (2–5 business days). Expedited 1–2 day delivery is available at checkout, and shipping is free on orders over $50.