Samsung MLT-D309L Black Toner Cartridge – High-Yield Compatible

Samsung MLT-D309L Black at a glance: a high-yield black toner cartridge rated at about 30,000 pages. Compatible: newly manufactured to Samsung's specifications. Fits the Samsung ML-5510/5512 and ML-6510/6512. 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

What's in the Box

• 1 × Samsung MLT-D309L Black compatible toner cartridge — about 30,000 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 (4 models)

• Samsung ML-5510ND / ML-5512ND
• Samsung ML-6510ND / ML-6512ND

Don't mix these up: MLT-D309L is the high-yield cartridge for the ML-5510 and ML-6510 series. It is not the same as MLT-D307L (ML-4510/5010).

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: MLT-D309L, Samsung MLT-D309L, Samsung MLT-D309L black, SamsungMLT-D309L black, MLT-D309L black toner, MLTD309L, D309L, Samsung D309L, MLT-D309L toner

Chips, Printer Messages & Installation

Installing: open the 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. Remove the protective tape or sheet, slide the cartridge in until it locks and close the cover.

Supply messages: the printer may show a "non-genuine toner" notice. Press OK to keep printing. Turning off automatic firmware updates helps keep compatible chips working.

Streaks or faint print: rock the cartridge again and print a cleaning page from the printer menu. The imaging drum is built into these cartridges, so a new cartridge also renews the drum.

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

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 Samsung MLT-D309L black print?

About 30,000 pages, based on Samsung's rating for the original MLT-D309L at roughly 5% coverage.

Will it work after a firmware update?

Samsung (now HP) firmware updates can block compatible chips. Keep automatic updates off. If your printer already updated, contact us before ordering.

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.