Product Specifications
| SKU | C4129X |
|---|---|
| OEM Part Number | C4129X |
| Cartridge Type | Toner Cartridge |
| Compatible Brand | HP |
| Color | Black |
| Condition | New compatible (non-OEM) |
| Warranty | 100% Satisfaction Guarantee |
| Page Yield | 10000 pages |
| Cost Per Page (Our Price) | 0.7 cents |
Product Description
HP 29X Black (C4129X) at a glance: a high-yield black toner cartridge rated at about 10,000 pages. Compatible: newly manufactured to HP's specifications. Fits the HP LaserJet 5000 and 5100. The imaging drum is built in. Backed by a 1-year 100% satisfaction guarantee; orders by 4 PM ET (Mon–Fri) ship the same day from Long Island, NY.
Key Facts
| Condition | Compatible (newly manufactured to the original's specifications) |
| Replaces OEM part | C4129X (HP 29X Black) |
| Page yield | About 10,000 pages (manufacturer rating for the original) |
| Cost per page | about 0.7¢ per page at our $69.95 price |
| Guarantee | 1-year 100% satisfaction guarantee: replacement or refund |
| Shipping | Same business day when ordered by 4 PM ET (Mon–Fri); free shipping on orders over $50 |
What's in the Box
- 1 × HP 29X Black (C4129X) compatible toner cartridge — about 10,000 pages
Page yields are the manufacturer's rating for the matching original cartridge, measured at roughly 5% page coverage under ISO/IEC 19752 or 19798 testing. Your results will vary with what you print.
Compatible Printers (6 models)
- HP LaserJet 5000 / 5000n / 5000gn
- HP LaserJet 5100 / 5100tn / 5100dtn
Don't mix these up: HP 29X fits the LaserJet 5000 and 5100 series. It is not the same as HP 27X (LaserJet 4000/4050) or HP 43X (LaserJet 9000).
Not sure? Look up your exact model on our Find Ink by Printer page, or contact us and we'll confirm the right toner for you.
Part Numbers & Also Known As
This toner cartridge replaces or is also searched for as: C4129X, HP C4129X, HP 29X black, HP29X black, 29X black toner, HP 29X toner, HP29X, 29X toner, C4129X toner
Chips, Printer Messages & Installation
Installing: open the printer's top or front cover, pull out the empty cartridge by its handle, then rock the new cartridge gently side to side five or six times to spread the toner. Pull the sealing tape straight out by its tab, slide the cartridge in until it seats and close the cover.
Supply messages: if the printer shows a "non-HP supply" or "used supply" notice, press OK or Continue to keep printing. If the cartridge isn't recognized, check that all packing material is off and reseat it firmly.
Streaks or faint print: rock the cartridge again to redistribute toner and print a cleaning page from the printer menu. See laser printer streaks and lines.
Still stuck? See our guide to fixing a cartridge that isn't recognized or contact us and we'll make it right.
Compatible vs. Remanufactured vs. Original
Original (OEM) toner is new from the printer brand and costs the most. Compatible toner, like this cartridge, is newly manufactured by a third party to the original's size and page-yield specifications, so it drops into the same slot at a much lower price. Remanufactured toner is an emptied original cartridge that has been rebuilt and refilled. Castle Ink sells compatible (newly manufactured) toner and remanufactured inkjet cartridges.
Other Options for the Same Printers
This is the only supply these printers need from us. Use Find Ink by Printer or contact us if you need help with anything else for your printer.
Frequently Asked Questions
How many pages does the HP 29X black print?
About 10,000 pages, based on HP's rating for the original C4129X at roughly 5% coverage.
Will this void my printer warranty?
No. Under the U.S. Magnuson-Moss Warranty Act, a manufacturer can't void your printer warranty just because you used a third-party or remanufactured supply. If a non-original supply directly caused damage, that specific repair might not be covered.
How long can I store it?
Sealed toner keeps for about two years at room temperature. Keep it in its bag, away from heat and direct sunlight, and store it flat.
When will my order ship?
Orders placed by 4 PM ET, Monday through Friday, ship the same business day from Long Island, NY, by USPS (2–5 business days). Expedited 1–2 day delivery is available at checkout, and shipping is free on orders over $50.
- See all HP Toner Cartridges
- See all Toner Cartridges