Memorial Day Sale
Save up to 58% on select HP tech, FREE shipping.
24 months special financing on purchases of $1,500 or more with the HP Credit Account.+
Shop
HOME/
INK, TONER & PAPER/
INK CARTRIDGES/
HP 45 INK CARTRIDGES/
HP 45 Black Original Ink Cartridge, 51645A#140

HP 45 Black Original Ink Cartridge, 51645A#140

Other offers available with the product:

FREE Priority Shipping on Ink and Toner

Earn triple HP Rewards on select printers, ink, toner, and paper

Memorial Day Sale

Product # 51645A#140
Page yield~930 pages

Color

black
Black
  • Choose the #1 brand for the #1 value
  • Up to 930 pages
  • Cartridges ship in packaging that is 100% recyclableSee all Specs

Can't find what you are looking for?

Selected options

(16 more available)
HP 45 Black Original Ink Cartridge, 51645A#140
9% back in HP Rewards
Get sharp, professional-quality results every time you print. Patented, pigment-based HP black ink and ink cartridge technology are designed together with your printer for easy installation and reliable performance.
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.

Outstanding print quality

Patented, pigment-based HP ink for extra sharp black text and professional results, every time Reliable HP cartridges—a critical component of the total imaging system—ensure consistent results.

Easy to use and maintain

Simple to install and easy to replace for low maintenance, trouble-free printing Free, convenient return and recycling in over 30 countries.[2] See insert or visit http://www.hp.com/recycle

HP reliability delivers value

The HP 45 was 9 times more reliable,on average, than the leading remanufactured brands tested[1] Precisely designed and engineered to save time and increase productivity
Will it work with my device?

Technical details

Color(s) of print cartridges

Black

Page yield (black and white)

~930 pages

Page yield footnote

Tested in HP Deskjet 930c Printer. 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

33 pl

Compatible ink types

Pigment-based

Operating temperature range

5 to 95°F

Storage temperature range

-40 to 140°F

Package dimensions (W x D x H)

4.56 x 1.0 x 6.2 in

Package weight

0.37 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
HP 45 Black Original Ink Cartridge, 51645A#140 is rated 4.5 out of 5 by 139.
  • y_2025, m_5, d_30, h_6
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_58, tr_81
  • loc_en_US, sid_51645A, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getAggregateRating, 23ms
  • REVIEWS, PRODUCT
Rated 5 out of 5 by BrucieD from HP 45 cartridge Very reliable but needs to be used regularly or it may dry out
Date published: 2025-02-01
Rated 1 out of 5 by GHen from Horrible Does not fit
Date published: 2025-01-26
Rated 5 out of 5 by Anonymous from Great ink cartridge Shipped to me right away, packaged perfectly
Date published: 2025-01-17
Rated 4 out of 5 by JRBnGA from Why SO Expensive? Ink cartridges for Ink Jet and Desk Jet printers have gotten too expensive! Two black only cartridges cost nearly $150! As for how it's doing and my opinion of it, fine. For the price of four HP cartridges, I can buy a new Epson Ecotank printer and four vials of ink, which is what I may do when these two cartridges are empty.
Date published: 2024-05-04
Rated 3 out of 5 by 2068533932 from Deskjet ink Not easy to find the correct ink
Date published: 2023-09-02
Rated 5 out of 5 by Flip46 from HP 45 black ink cartridge HP quality is exellent
Date published: 2023-06-09
Rated 5 out of 5 by Hasenoehrl from Keep it in stock He likes it, please keep it..but reduce the price a little bit”
Date published: 2023-01-22
Rated 5 out of 5 by Engineerbruce from Manufacturer is Best I have found that HP cartridges last longer and work best in their own machines.
Date published: 2023-01-17
  • y_2025, m_5, d_30, h_6
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_58, tr_81
  • loc_en_US, sid_51645A, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 5ms
  • REVIEWS, PRODUCT

is their a color ink for Office Jet K80 printer

Asked by: Ronnie72
The HP 78 is the color ink used in the OfficeJet K80. Thanks for your question!
Answered by: HP Team Grant
Date published: 2023-04-10

Can the HP 45 black cartridge HP 51645a work with a XiJet NP45 Series?

Asked by: simon92
Thank you for your question! The HP 45 Black Original Ink Cartridge is compatible with the following HP printers: HP Deskjet 995ck color inkjet printer C9011A#A2L HP Deskjet 935c Printer C6427E#A2L HP Deskjet 9300 Printer C8136A#A2L HP Deskjet 832c Printer C6413B#ABA HP Deskjet 990cse Printer C6455B#ABA HP Deskjet 6127 Printer C8959B#A2L HP Deskjet 932c Printer C6427B#ABA HP Deskjet 882c Printer C6409B#ABA HP Deskjet 1120cse Printer C2679A#ABA HP Deskjet 895cse Printer C6410B#ABA HP Deskjet 952c Printer C6428B#ABA HP Deskjet 722c Printer C5871A#ABA HP Deskjet 6122 Printer C8954B#A2L HP Deskjet 1220cse Printer C2695A#ABA HP Deskjet 960cxi Printer C8932A#ABA HP Deskjet 960cse Printer C8932B#ABA HP Deskjet 930c Printer C6427A#ABA HP Deskjet 970cse Printer C6429B#ABA HP Deskjet 950c Printer C6428A#ABA HP Deskjet 712c Printer C5894B#ABA HP Deskjet 970cxi Professional Series Printer C6429A#ABA HP Officejet t65 All-in-One C6673A#ABA HP Officejet g95 All-in-One C6740A#ABA HP Officejet k80 All-in-One C6750A#ABA HP Officejet g85 All-in-One C6737A#ABA HP Officejet r80 All-in-One C6684A#ABA HP Officejet t45 All-in-One C6669A#ABA HP Officejet r40 All-in-One C6680A#ABA HP Officejet k60 All-in-One C6748A#ABA HP Officejet g55 All-in-One C6736A#ABA HP Officejet r60 All-in-One C6683A#ABA OFFICEJET PRO HP Officejet Pro 1170cse All-in-One C5364A#ABA PHOTOSMART HP Photosmart 1218 Printer C8402A#ABA HP Photosmart 1115 Printer C8639A#ABA HP Photosmart 1215 Printer C8401A#ABA HP Photosmart p1000/1000 Printer C6723A#ABA HP Photosmart p1100 Printer C6724A#ABA HP Photosmart 1315 Printer C8634A#ABA OTHER HP 1220 Fax C8461A#ABA HP 310 Digital Copier C8431A#ABA HP Color Copier 190 C6741A#ABA
Answered by: HP Team Grant
Date published: 2024-03-05

IS there a color Ink for HP Color Copier 290? Is it the Color 78?

Asked by: Claiborne
The HP 290 uses HP 78 ink. The 78 cartridge has been discontinued as all models the cartridge has been compatible with are discontinued and have been for over a decade.
Answered by: HP Team Grant
Date published: 2023-07-06

I have HP Officejet Pro 8600 Plus printer. I usually use ink cartridge # 951. Stores in my area do not have them. Are there other cartridge # I can use? Can I use 950? I need black ink NOW. If you have any compatible ones, I would like to order. Patra.

Asked by: Patra
Thank you for your question, the HP Office Jet Pro 8600 plus only uses HP 950 for black and HP 951 for color.
Answered by: HP Team Daniel
Date published: 2024-11-27

What # black toner fits a HP photo smart CN731A model #D110A

Asked by: Lyn42
Thank you for your question! The HP Photosmart D110A uses the HP 60 ink. The HP 60 has replaced the HP 901 ink and can be found at this link: https://www.hp.com/us-en/shop/mdp/ink-toner/hp-photosmart-e-all-in-one-printer---d110a
Answered by: HP Team Grant
Date published: 2024-10-03

when is the 51645a going end of life?

Asked by: Delmellintes
Thank you for your question! This forum does not have pricing or inventory information. For assistance, please get in touch with HP Store Customer Service at this link: https://www.hp.com/us-en/shop/cv/customerservice
Answered by: HP Team Grant
Date published: 2024-11-01

I owns an officeject 4 in one older model take black and color ink cartridges needs the color one

Asked by: Anonymous
Hello. Thanks for your question. We need more information on your HP printer such as the model number or product number. Here are some instructions: https://support.hp.com/us-en/document/c00033108 Resubmit your question with the model number or product number. We will respond to your question as soon as possible.
Answered by: HP Team Cheri
Date published: 2022-12-04

45 Black is great! My question is about 78 color cartridge - Why would HP only have the Black 45 and not the Color 78 to go along with it? The only HP printer to work perfectly every time is our DeskJet 990Cse printer after all these years!!

Asked by: Mnmshadow
The HP 78 ink may be out of stock at this time. This forum does not have information on inventory, however. For assistance open a chat with an HP Live Expert today! You can open a chat on this product page.
Answered by: HP Team Grant
Date published: 2023-05-27
  • y_2025, m_5, d_30, h_6CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_11
  • loc_en_US, sid_51645A, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_hp
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 120ms
  • QUESTIONS, PRODUCT

SIMILAR PRODUCTS

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.