Блог
How to Identify a Genuine HP Original HP45 Empty Cartridge
We only buy genuine HP original HP45 (51645A) cartridges, so the most useful skill for a collector is sorting them before shipping. These checks work without special tools.
1. Check the label and part number
Original cartridges carry the 51645A part number and a printed date code. Third-party labels, stickers covering the original label, or labels with another brand name are a strong sign of a compatible or remanufactured cartridge.
2. Look for refill holes and plugs
A cartridge that has been refilled before often has a drilled hole, a rubber or plastic plug, or glue marks on the top. These cartridges are not accepted, even if the shell was originally made by HP.
3. Inspect the nozzle plate and contacts
The gold contact strip and the nozzle plate should be intact — no deep scratches, corrosion or missing pads. Dried ink is normal and usually cleans off; physical damage does not.
4. Feel the shell
Original shells have a consistent finish and tight seams. Cracks, warping or loose parts make a cartridge unsuitable for remanufacturing.
5. When in doubt, send photos
Take clear photos of the top, the label side and the nozzle area and send them to us on WhatsApp. We tell you which cartridges qualify before you ship — so you do not pay freight for cartridges that cannot be accepted (and cannot be returned).
We only buy genuine HP original HP45 (51645A) cartridges. HP is a trademark of HP Inc. MufengTech is not affiliated with HP Inc.
Related articles
- When to Replace an HP45 CartridgeWhen to replace an HP45 cartridge: signs an HP45 cartridge is running out, HP45 print fading, and how to plan new or remanufactured 51645A swaps (MOQ 10).
- HP45 Cartridge Shelf Life and Storage GuideHP45 cartridge shelf life and storage for new and remanufactured 51645A cartridges: sealed packaging, cool dry storage, FIFO and when to open a unit.
- HP45 Empty Cartridge Grades A, B and C ExplainedHP45 empty cartridge grades A, B and C explained: what each grade means, what is not accepted, how inspection works and how to keep a better grade.
