What Ink Does the HP OfficeJet Pro 8135e Use?
Last Updated:Quick answer: the HP OfficeJet Pro 8135e uses HP 923 ink — four individual pigment cartridges. The high-yield tier is spelled HP 923e, not 923XL. There is no such thing as an HP 923XL, and any listing selling you one is relabelling something else.
Two other wrong answers circulate for this printer. HP 918/918e is the European part numbering for the same hardware and will not be what a US machine expects. HP 910/910XL belongs to the older OfficeJet Pro 8025e generation.
HP OfficeJet Pro 8135e ink at a glance
| Cartridge | Family | Part Number | Approx. Yield |
|---|---|---|---|
| Black (standard) | HP 923 | 4K0T3LN | ~500 pages |
| Cyan (standard) | HP 923 | 4K0T0LN | ~400 pages |
| Magenta (standard) | HP 923 | 4K0T1LN | ~400 pages |
| Yellow (standard) | HP 923 | 4K0T2LN | ~400 pages |
| Black (high yield) | HP 923e | 4K0T7LN | ~1,000 pages |
| Cyan (high yield) | HP 923e | 4K0T4LN | ~800 pages |
| Magenta (high yield) | HP 923e | 4K0T5LN | ~800 pages |
| Yellow (high yield) | HP 923e | 4K0T6LN | ~800 pages |
Those are HP's own ISO figures. Note that the 923e high-yield roughly doubles the black and doubles the colors — a bigger jump than most HP families offer, which makes it the obvious choice if you print steadily.
Four individual cartridges: why it matters
This printer uses one cartridge per color rather than a combined tri-color. That is a real advantage: when you run out of magenta, you replace magenta, not a three-color block with usable cyan and yellow still in it. Over a year of mixed printing it is one of the biggest single savings a printer design can offer.
All four are pigment inks, which is why output on plain paper looks crisp and resists smudging and highlighter better than dye-based ink. It is also why this class of machine suits documents rather than glossy photos.
Castle Ink recommendation
Castle Ink stocks compatible HP 923 cartridges in all four colors, each with an OEM chip so the printer reads them correctly, and each guaranteed for a year:
Straight answer on the high-yield tier: we do not currently stock a compatible 923e. If you want the 1,000-page black you will need the OEM cartridge for now. We would rather tell you that than sell you a standard cartridge described as high-yield.
About the HP OfficeJet Pro 8135e
The OfficeJet Pro 8135e sits a step above the 8125e, adding a larger touchscreen and a higher recommended monthly volume while keeping the same four-cartridge HP 923 ink system.
Roughly 20 ppm black and 10 ppm color, automatic duplex printing, a 35-sheet ADF, dual-band Wi-Fi and Ethernet. HP now sells this model as the OfficeJet Pro 8135 without the "e" — same cartridges either way.
Common problems on this model
"Cartridge problem" after a firmware update
HP's Dynamic Security can change how this printer treats non-HP chips. Reseat the cartridge and power-cycle first — unplug at the wall for 60 seconds. If it persists, our guide to firmware updates and third-party ink explains what changed and how to stop the next one.
Banding or misaligned output
Run a printhead alignment from the printer's tools menu, not just a cleaning. On a four-cartridge pigment machine, misalignment shows up as visible banding far more often than clogging does.
Slow first page
Pigment ink needs the printhead primed, so the first page after sleep is always slowest. Turning off deep sleep in the printer settings helps, at the cost of a little standby power.
Paper jams at the duplexer
Check the rear access door and pull the duplex cassette right out — on this series that is where most jams actually sit. See our paper jam guide.
FAQ
What ink does the HP OfficeJet Pro 8135e use?
HP 923 in black, cyan, magenta and yellow, or the high-yield HP 923e equivalents. Four individual cartridges.
Is there an HP 923XL?
No. The high-yield tier is HP 923e. Listings advertising "923XL" are using a part number that does not exist.
Does the HP OfficeJet Pro 8135e use HP 910 ink?
No. HP 910 and 910XL belong to the OfficeJet Pro 8025e and 8035e generation.
Is the 8135e ink different from the 8125e?
No. Both use HP 923 standard and HP 923e high-yield, in the same four positions.
My 8135e says the cartridge is not intended for this printer. Why?
Most often a European 918/918e cartridge bought by mistake, or a contact that needs cleaning. Check the part number on the cartridge against 4K0T3LN, 4K0T0LN, 4K0T1LN or 4K0T2LN.
Shop HP 923 now
Restock the black, cyan, magenta and yellow. Different model? Find it on our Find Ink by Printer page, or see how your printer scores on running cost in the monthly CastleScore rankings.
An independent 0–100 score for every printer, refreshed monthly from thousands of owner reviews and expert tests — plus what the ink or toner actually costs to run. See this month's Top 10 inkjet and laser rankings, or use the PrinterIQ™ finder.
See the CastleScore rankings →