Product Specifications
| SKU | CF237X |
|---|---|
| OEM Part Number | CF237X |
| Cartridge Type | Toner Cartridge |
| Compatible Brand | HP |
| Color | Black |
| Condition | New compatible (non-OEM) |
| Warranty | 100% Satisfaction Guarantee |
| Page Yield | 25000 pages |
| Cost Per Page (Our Price) | 0.74 cents |
Product Description
HP 37X Black (CF237X) at a glance: a high-yield black toner cartridge rated at about 25,000 pages. Compatible: newly manufactured to HP's specifications. Fits the HP LaserJet Enterprise M607, M608 and M609 series and Enterprise MFP M631, M632 and M633 series. 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 | CF237X (HP 37X Black) |
| Page yield | About 25,000 pages (manufacturer rating for the original) |
| Cost per page | about 0.7¢ per page at our $185.95 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 37X Black (CF237X) compatible toner cartridge — about 25,000 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 (10 models)
- HP LaserJet Enterprise M607n
- HP LaserJet Enterprise M607dn
- HP LaserJet Enterprise M608n
- HP LaserJet Enterprise M608dn
- HP LaserJet Enterprise M608x
- HP LaserJet Enterprise M609dn
- HP LaserJet Enterprise M609x
- HP LaserJet Enterprise MFP M631dn
- HP LaserJet Enterprise MFP M632h
- HP LaserJet Enterprise MFP M633fht
Don't mix these up: HP 37X is the high-yield version of 37A and fits the same slot. Some M608 and M609 models also take the extra-high-yield 37Y. It is not the same as HP 90A/90X (M601/M602/M603).
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: CF237X, HP CF237X, HP 37X black, HP37X black, 37X black toner, M607 black toner, M609 black toner
Chips, Printer Messages & Installation
Installing: open the printer's toner door, 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. Remove the orange shipping lock and pull the sealing tape straight out, then slide the cartridge in until it seats and close the door.
Chip and supply messages: this compatible cartridge carries its own chip. The printer may show a "non-HP" or "used supply" notice; press OK to continue. If the cartridge isn't recognized, remove it, check that all packing material is off and reseat it firmly. Keeping automatic firmware updates off avoids most chip problems.
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, chip 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
Frequently Asked Questions
How many pages does the HP 37X Black print?
About 25,000 pages, based on HP's rating for the original CF237X at roughly 5% coverage.
37A or 37X?
Both fit the same printers. 37X prints about 25,000 pages versus about 11,000 for 37A.
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.
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