CompAndSave is proud to offer wallet-friendly prices on our replacement HP Deskjet 3840 ink cartridges with genuine-like quality and satisfaction. Why choose CompAndSave when shopping for HP 3840 ink cartridges?

  • LOW PRICE GUARANTEE. Our HP ink cartridges are designed to ensure that you will get the same number of sheets and print quality as the genuine ones at a much lesser price.
  • WORKS LIKE THE ORIGINAL. Not sure on how to install replacement HP printer ink cartridges? Worry no more as CompAndSave's cartridges are designed to work and perform just like the original cartridges.
  • MORE DISCOUNTS. Enjoy even bigger discounts if you order HP Deskjet 3840 ink cartridges in bulk. We have single and combo pack cartridges available like the single pack for the black HP 27 ink cartridge (C8727AN) or the HP 27 and 28 ink cartridges 2-pack. Make sure to explore different quantities to find the price break that suits you best.
  • NEXT DAY SHIPPING. HP 3840 ink cartridges orders placed before 2:00 p.m. PST Monday through Friday will be processed the same day. Orders placed after 2:00 p.m. PST will be processed the following business day. Check our Shipping Policy for more information.
  • FREE SHIPPING. For U.S. orders, buy products up to $50 or more, and the shipping fee is on us!
  • SATISFACTION GUARANTEE. CompAndSave is so confident in the quality of our replacement HP printer cartridges that we offer a FULL refund for orders returned within ten days upon delivery. We even issue refunds or store credit up to 365 days from the purchase date! Make sure to read our Return Policy for more details.
  • WILL NOT VOID PRINTER WARRANTY. Using replacement HP Deskjet 3840 ink cartridges will never void your printer warranty. Visit our Ink Knowledge Base page for more details or contact us for any further questions.

Hurry and take advantage of our great prices for HP 3840 ink cartridges today. SAVE Now!

HP Deskjet 3840 Ink Cartridges

Free shipping on orders $50 or more
All ink & toner come with a one-year 100% satisfaction guarantee.
Our products will never void your printer's warranty.

Replacement HP Deskjet 3840 Ink Cartridges from $11.99

HP 27 and 28 Ink Cartridges 2-Pack: 1 Black, 1 Color
Replacement HP 27 and 28 Ink Cartridges 2-Pack - 1 x 27 Black, 1 x 28 Color
Retail Price: $73.98

Save $47.00 (64% off retail price)

Retail Price: $105.97

Save $67.98 (64% off retail price)

Retail Price: $179.95

Save $117.00 (65% off retail price)

HP 27 C8727AN Black Ink Cartridge
Replacement HP 27 Ink Cartridge - C8727AN - Black
Retail Price: $31.99

Save $20.00 (63% off retail price)

Retail Price: $41.99

Save $26.00 (62% off retail price)


How do I install HP Deskjet 3840 ink cartridges?

  1. Turn on your printer.Open the top cover.
  2. The ink cartridge's carriage will automatically move, so make sure to wait for it to completely stop moving before you proceed.
  3. To remove the used cartridge, press it down and pull it out.
  4. Get your new CompAndSave HP 3840 ink cartridge. Open it over a sink or garbage can to avoid any mess in case it leaks, as sometimes, factories tend to overfill the ink cartridges. Make sure to touch the black plastic part only, then remove the covering tape that is usually bright in color along with the plastic protective case, if there is, before installing it.
  5. Hold the sides of the new ink cartridge. Make sure that the contacts are facing the printer.
  6. Insert the ink cartridge in an upward angle until it snaps lock into place.
  7. Close the printer’s top cover.

HP Deskjet 3840 Ink Cartridges FAQs

What cartridge does HP Deskjet 3840 use?
The HP Deskjet 3840 printer uses the standard yield HP 27 black and HP 28 color ink cartridges. CompAndSave offers the replacement HP 27 black and HP 28 color cartridges, which are high-quality printer inks that are budget-friendly. To know more about remanufactured and compatible ink cartridges, check our Ink Knowledge Base.
How do I know what ink my HP printer uses?
The best way to check what specific cartridge your printer uses is by checking your printer manual, cartridge package, or by doing a quick search using your printer name. CompandSave offers the replacement standard yield HP 27 black and HP 28 tri-color ink cartridges for your HP Deskjet 3840 printer.

Replacement HP Deskjet 3840 Ink Cartridges Reviews