Lexmark C343X Toner Cartridges
Lexmark C343X extra high yield toner cartridges keep your Lexmark MC3426adw or MC3426i printer operating reliably across demanding daily office print tasks. Designed specifically for busy workplace settings, this genuine series provides impressive page outputs, offering single colour replacements and full multipack options. Our 4.8 Google Star rating shows that our customers consistently receive high-quality cartridges backed by reliable performance.
Printers Compatible with Lexmark C343X Toner Cartridges
Expected page output and replacement cycles
Page yield ratings for Lexmark C343X toners follow ISO/IEC 19798 standard testing for colour laser printing. The C343XK0 black toner produces up to 3,000 pages, while cyan, magenta, and yellow cartridges deliver up to 4,500 pages based on 5% page coverage under normal business conditions.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| C343XK0 | Extra High Yield | Black | 3,000 | $0.066 |
| C343XC0 | Extra High Yield | Cyan | 4,500 | $0.069 |
| C343XM0 | Extra High Yield | Magenta | 4,500 | $0.069 |
| C343XY0 | Extra High Yield | Yellow | 4,500 | $0.069 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Best way to stock these cartridges
If you print mainly text documents, purchasing individual black toners as required ensures steady operations. If you print high-colour presentations, buying the full C343X multipack bundle lowers ordering administrative overhead. Check our returns policy for peace of mind. Free delivery applies on all orders over $99. We dispatch stock directly from Australian warehouses located in Perth, Brisbane, Sydney, Melbourne, and Adelaide to ensure prompt delivery across the country. Order your Lexmark toner cartridges today to keep your office supplied.
Pro Tip
Lexmark extra high yield toners feature unified toner and imaging architecture, but always ensure the printer rests on a level surface when changing cartridges to prevent optical sensor misalignment.
Match Your Printing Habits to the Right Lexmark C343X Toner Cartridge Pack
Want longer between reorders? The 4-Pack C343X Genuine (from $1,111.69) gives the same full-colour coverage with a higher page yield per cartridge and also qualifies for free delivery.
If only one colour has run dry, there's no need to replace the rest - a single Genuine C343XK0 cartridge (from $196.78) is the lowest-cost way to keep printing.
For maximum yield, the Genuine C343XC0 Cyan Extra High Yield cartridge (from $312.54) offers the lowest cost per page of any option in this range and qualifies for free delivery.
Frequently Asked Questions
Why does the C343XK0 black toner have a lower page yield than the colour cartridges in this series?
Lexmark engineered the C343X series so cyan, magenta, and yellow cartridges each yield 4,500 pages, whereas the black cartridge yields 3,000 pages. In mixed-office workgroups with high monochrome text output, this balance aligns cartridge replacement schedules so black and colour cartridges deplete at more comparable time intervals.
Do I need to replace all four C343X cartridges at the same time when buying a bundle?
No. Even when purchased as a full multipack bundle, individual colour cartridges can be installed separately as needed. Unopened genuine Lexmark toners remain completely stable in their original protective packaging until required.
How long can unused Lexmark C343X toner cartridges be stored before installation?
Sealed genuine Lexmark toner cartridges have an expected shelf life of up to 2 years. Store them horizontally in a climate-controlled environment away from direct sunlight and moisture to maintain print performance.
Is C343X the same as C343XK0, C343XC0, C343XM0, and C343XY0?
Yes. C343X refers to the overall toner cartridge series and bundle code, whereas C343XK0 (Black), C343XC0 (Cyan), C343XM0 (Magenta), and C343XY0 (Yellow) are the specific individual manufacturer part numbers for each colour.











