Compatible HP 51645A (HP 45) Black Ink Cartridge
Reg Price $24.99
(72 Reviews)
$19.99
Compatible black ink for HP 45 (51645A). Works with the HP DeskJet 970 Cxi, DeskJet 1120C and OfficeJet G55. Prints about 1,100 pages.
In Stock and Usually Ships Same Day
Free shipping over $50
18-month guarantee
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SKU: 51645A
Description
Compatible Black Ink for HP 45 (51645A)
This compatible black ink replaces the HP 45 (51645A) in older HP inkjet printers and copiers. It is a standard-capacity cartridge, rated for about 1,100 pages, and it suits anyone who still counts on an older HP machine for letters, forms and everyday paperwork.
Made for Older HP DeskJet and OfficeJet Printers
This ink works with the HP DeskJet, HP OfficeJet, HP OfficeJet Pro, HP PhotoSmart, HP DesignJet and HP Color Copier lines. Examples include the HP DeskJet 970 Cxi, the HP DeskJet 1120C and the HP OfficeJet G55.
Plain Black Ink for Text
- Black ink for clear, readable text on letters, forms and bills
- A direct replacement for the HP 45, so there is nothing new to learn
- Costs less than a new name-brand cartridge
When your current black runs out, this ink gets your printer back to turning out the pages you need.
Specifications
| OEM Numbers | 51645A |
|---|---|
| Replaces Brand | HP |
| Capacity | Standard |
| Page Yield | 1,100 |
| Color | Black |
| Product Instance | Compatible |
| Shelf Life | 18 Months |
| Product Guarantee | 18 Months |
COMPATIBLE PRINTERS
All Printers
- DA-500 Addressing System
- DA-550 Addressing System
- DA-610 Addressing System
- DA-612 Addressing System
- DA-615 Addressing System
- DA-620 Addressing System
- DA-750 Addressing System
- DA-900 Addressing System
- I Envelope Addressing System
- II Envelope Addressing System
- III Envelope Addressing System
- PS-2000 Addressing System
DeskJet
- DeskJet 1000 Cse
- DeskJet 1000 Cxi
- DeskJet 1120 Cse
- DeskJet 1120 Cxi
- DeskJet 1120C
- DeskJet 1125C
- DeskJet 1180C
- DeskJet 1220 Cse
- DeskJet 1220 Cxi
- DeskJet 1220C/PS
- DeskJet 1600C
- DeskJet 1600CM
- DeskJet 1600CN
- DeskJet 6122
- DeskJet 6127
- DeskJet 710C
- DeskJet 712C
- DeskJet 720C
- DeskJet 722C
- DeskJet 820 Cse
- DeskJet 820 Cxi
- DeskJet 830C
- DeskJet 832C
- DeskJet 850C
- DeskJet 855 Cse
- DeskJet 855 Cxi
- DeskJet 855C
- DeskJet 870 Cse
- DeskJet 870 Cxi
- DeskJet 880C
- DeskJet 882C
- DeskJet 890
- DeskJet 890 Cse
- DeskJet 890 Cxi
- DeskJet 890CM
- DeskJet 895 Cse
- DeskJet 895 Cxi
- DeskJet 9300
- DeskJet 930C
- DeskJet 932C
- DeskJet 935C
- DeskJet 950C
- DeskJet 952C
- DeskJet 959C
- DeskJet 960 Cse
- DeskJet 960 Cxi
- DeskJet 960C
- DeskJet 970 Cse
- DeskJet 970 Cxi
- DeskJet 980 Cxi
- DeskJet 990 Cse
- DeskJet 990 Cxi
- DeskJet 990c
- DeskJet 995C
- DeskJet 995ck
Customer Reviews
Thomas Vandenberg
Rating: 5/5
Great product @ a great price.
Fri Oct 23 2026 22:55:55 GMT+0000 (Coordinated Universal Time)
Thomas Lengel
Rating: 5/5
Excellent inks!
I have used Swift Ink for a while now and they are excellent, good amount of use and quality from each one! Thank You!
Thu May 28 2026 00:55:45 GMT+0000 (Coordinated Universal Time)
philip milot
Rating: 5/5
Good stuff.
Sat Apr 11 2026 12:38:05 GMT+0000 (Coordinated Universal Time)
Stan Foster
Rating: 5/5
Very satisfied with Swift Ink
It is my pleasure to relate that my recent order for a replacement ink cartridge for my HP Desk Jet 932 was promptly and correctly fulfilled at a competitive price.
This was my second order from Swift Ink (The first being several years ago) and while I feared the company might not be able to match their previous service, I was gratefully rewarded with the same "Swift" and accurate service I had previously enjoyed.
Based on my experiences with Swift Ink I can recommend this company and, if the new cartridge lasts as long as the earlier cartridge, I can make my recommendation without reservation.
Thank you Swift Ink. I would have given you 5 stars even if you hadn't given them to yourself already.
Thu Apr 02 2026 15:50:50 GMT+0000 (Coordinated Universal Time)
Rose Dobosz
Rating: 5/5
Quality cartridges
Quick delivery and quality cartridges
Sun Nov 30 2025 02:08:23 GMT+0000 (Coordinated Universal Time)
Rose Dobosz
Rating: 5/5
The cartridges are great
The cartridges worked great in my printer.
Sat Nov 22 2025 16:29:43 GMT+0000 (Coordinated Universal Time)
Elaine
Rating: 5/5
Affordable Ink & Quick Service
This is my 4th purchase. The price is good, and the delivery was quick.
Tue Nov 11 2025 05:47:25 GMT+0000 (Coordinated Universal Time)
Linnae
Rating: 4/5
so far so good
Thu Aug 07 2025 00:52:28 GMT+0000 (Coordinated Universal Time)
Percell Locklear Jr
Rating: 5/5
Remanufactured Inkjet Cartridges From Swiftink
I have been using them for years in my HP 932 C Printer and they have worked performed greatly while saving me some dough as well.
Thu Aug 22 2024 17:50:30 GMT+0000 (Coordinated Universal Time)
Greg Gil
Rating: 5/5
reliable
Always a reliable company for me, and great price. .I have an old HP Deskjet and this works for me.
Wed May 29 2024 15:51:13 GMT+0000 (Coordinated Universal Time)
