Description

4 Pack Genuine Lexmark C343XK/C/M/Y Extra High Yield Toner Cartridge Set is a complete genuine Lexmark CMYK toner solution for compatible Lexmark MC3426 series colour laser multifunction printers.
This value set includes one Black, one Cyan, one Magenta and one Yellow Genuine Lexmark Extra High Yield Return Programme Toner Cartridge, with each cartridge delivering up to approximately 4,500 standard pages. It is an excellent choice for offices and businesses with regular or high-volume colour printing requirements.
- Complete 4-pack Genuine Lexmark CMYK toner set
- Includes Black, Cyan, Magenta and Yellow cartridges
- Extra High Yield – up to approximately 4,500 pages per cartridge
- Genuine Lexmark Unison™ Toner technology
- Designed for consistent professional colour output
- Return Programme cartridges
- Compatible with Lexmark MC3426i and MC3426adw
- Ideal for offices, businesses and higher-volume colour printing
Complete Genuine Lexmark 4-Colour Toner Set
This convenient 4-pack contains all four toner colours required by your compatible Lexmark colour laser multifunction printer:
- 1 × C343XK0 Black Extra High Yield Return Programme Toner Cartridge – up to 4,500 pages
- 1 × C343XC0 Cyan Extra High Yield Return Programme Toner Cartridge – up to 4,500 pages
- 1 × C343XM0 Magenta Extra High Yield Return Programme Toner Cartridge – up to 4,500 pages
- 1 × C343XY0 Yellow Extra High Yield Return Programme Toner Cartridge – up to 4,500 pages
Buying the complete CMYK set is a convenient way to keep replacement toner available and reduce the risk of printer downtime when one colour runs out.
Extra High Yield – Up to 4,500 Pages Per Cartridge
Each cartridge in this C343X toner set provides a declared yield of up to approximately 4,500 standard pages. The declared black and composite colour cartridge yields are measured in accordance with ISO/IEC 19798.
The Extra High Yield capacity makes this toner set particularly suitable for organisations that print frequently and want to reduce cartridge replacement frequency compared with lower-yield cartridges.
Genuine Lexmark Unison™ Toner
These are Genuine Lexmark toner cartridges featuring Lexmark's Unison™ Toner technology. The toner formulation is engineered as part of the Lexmark print system to provide consistent image quality, dependable performance and reliable colour reproduction from the first page through to the last.
Genuine Lexmark supplies are designed to work together with compatible Lexmark printers, helping maintain print quality and long-term print-system reliability.
Professional Colour Output
The C343X toner family is designed for sharp business documents, clear text, strong graphics and consistent colour reproduction. It is well suited to everyday office printing including:
- Business reports and presentations
- Invoices and customer documents
- Marketing materials
- Charts and colour graphics
- Training and educational documents
- General office correspondence
Compatible Lexmark Printers
This Genuine Lexmark C343X Extra High Yield toner set is designed for the following printers:
- Lexmark MC3426i
- Lexmark MC3426adw
Please check your printer model before ordering, as Lexmark toner cartridges can be region-specific and similar-looking cartridges may not be interchangeable.
Return Programme Cartridges
The C343XK0, C343XC0, C343XM0 and C343XY0 cartridges supplied in this pack are Lexmark Return Programme cartridges.
Lexmark Return Programme cartridges are sold subject to Lexmark's Return Programme terms and are intended for single use, after which they can be returned to Lexmark for remanufacturing or recycling through the Lexmark Cartridge Collection Programme.
C343X Extra High Yield vs Standard Yield Toner
| Toner Family | Colour | Approx. Yield |
|---|---|---|
| C3230 Series | Black / Cyan / Magenta / Yellow | Up to 1,500 pages each |
| C343X Series | Black / Cyan / Magenta / Yellow | Up to 4,500 pages each |
For customers with regular printing requirements, the C343X Extra High Yield cartridges provide approximately three times the declared page yield of the 1,500-page cartridge family, reducing the frequency of toner replacement.
Product Specifications
| Brand | Lexmark |
| Product Type | Genuine Original Laser Toner Cartridge Set |
| Pack Size | 4 Cartridges |
| Colours | Black, Cyan, Magenta, Yellow |
| Black Part Number | C343XK0 |
| Cyan Part Number | C343XC0 |
| Magenta Part Number | C343XM0 |
| Yellow Part Number | C343XY0 |
| Yield – Black | Up to approximately 4,500 standard pages |
| Yield – Cyan | Up to approximately 4,500 standard pages |
| Yield – Magenta | Up to approximately 4,500 standard pages |
| Yield – Yellow | Up to approximately 4,500 standard pages |
| Yield Standard | ISO/IEC 19798 |
| Toner Technology | Lexmark Unison™ Toner |
| Cartridge Type | Extra High Yield Return Programme |
| Compatible Printers | Lexmark MC3426i, MC3426adw |
What's Included?
- 1 × Genuine Lexmark C343XK0 Black Extra High Yield Toner Cartridge
- 1 × Genuine Lexmark C343XC0 Cyan Extra High Yield Toner Cartridge
- 1 × Genuine Lexmark C343XM0 Magenta Extra High Yield Toner Cartridge
- 1 × Genuine Lexmark C343XY0 Yellow Extra High Yield Toner Cartridge
Related Lexmark Supplies
For compatible Lexmark MC3426 series printers, you may also require the Lexmark 20N0W00 Waste Toner Container, rated for approximately 15,000 pages.
You can also browse individual and related Lexmark supplies through the Lexmark MC3426 supplies range at OzToner.
Ideal For
- Small and medium businesses
- Busy home offices
- Professional offices
- Schools and education environments
- Customers printing regular colour business documents
- Users wanting genuine Lexmark supplies
- Customers wanting to keep a complete replacement CMYK toner set on hand
Why Choose Genuine Lexmark C343X Toner?
- Genuine Lexmark original supplies
- Up to 4,500-page yield per cartridge
- Complete CMYK set in one purchase
- Lexmark Unison™ Toner technology
- Consistent professional colour output
- Engineered specifically for compatible Lexmark printers
- Return Programme recycling support
- Reduced cartridge replacement frequency compared with lower-yield cartridges
Frequently Asked Questions (FAQ)
Is this genuine Lexmark toner?
Yes. This pack contains four Genuine Lexmark toner cartridges: C343XK0 Black, C343XC0 Cyan, C343XM0 Magenta and C343XY0 Yellow.
How many cartridges are included?
Four cartridges are included – one Black, one Cyan, one Magenta and one Yellow.
What is the toner yield?
Each cartridge has a declared yield of up to approximately 4,500 standard pages. Black and composite CMY cartridge yields are declared according to ISO/IEC 19798.
Does the 4-pack provide 18,000 pages?
It is better to describe the set as providing up to 4,500 pages per colour cartridge rather than combining the four yields. A colour page can use multiple toner colours simultaneously, so CMYK cartridge yields should not normally be added together as an 18,000-page printer yield.
Which printers use this toner set?
The C343X Extra High Yield toner cartridges are designed for compatible Lexmark MC3426i and MC3426adw colour laser multifunction printers.
Are these Return Programme cartridges?
Yes. The C343XK0, C343XC0, C343XM0 and C343XY0 cartridges in this set are Lexmark Return Programme cartridges and are subject to Lexmark's Return Programme terms.
What is the difference between standard and Extra High Yield toner?
The Extra High Yield C343X cartridges provide up to approximately 4,500 pages per cartridge, compared with approximately 1,500 pages for the lower-yield cartridge family. Extra High Yield toner is therefore better suited to customers with higher print volumes.
OEM Code: C343XK0 C343XC0 C343XM0 C343XY0
Brand: Lexmark
Duty Cycle: Approx. 4,500/4,500 (B/CMY) pages
Includes Of:
1 x Genuine Lexmark MC3426 C343XK Black Toner Cartridge Extra High Yield Return Program
1 x Genuine Lexmark MC3426 C343XC Cyan Toner Cartridge Extra High Yield Return Program
1 x Genuine Lexmark MC3426 C343XM Magenta Toner Cartridge Extra High Yield Return Program
1 x Genuine Lexmark MC3426 C343XY Yellow Toner Cartridge Extra High Yield Return Program
or:
Lexmark MC3426
Lexmark MC3426adw
Lexmark MC3426i
Last Updated Date: 13 September 2026
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Refund Policy
The OZ Toner Return Policy applies to all purchases made on this website.
We recommend you read our Returns Policy carefully prior to placing an order and retain a copy of these terms and your order so you are familiar with our policy on refunds, returns and exchanges and your rights under the Australian Consumer Law.
We recommend you immediately examine goods delivered to you to ensure that there are no visible signs of damage or fault and that the goods received match the order you placed. Our exchange/return window is within 30 days of receiving your order. All incorrectly ordered or unwanted returns will incur a minimum 20% restocking fee.
Our Return Address
52A/5 Gladstone Rd, Castle Hill, NSW 2154
Exchange/Return (Consumables)
OZ Toner allows exchange/return within 30 days of receiving your order. This applies to consumable products purchased from us: inks, toners, printing and fax supplies and paper. Please scroll down to read our policy on exchange/return for scanners and printers.
If any consumable goods purchased from OZ Toner are damaged, lost in transit, incorrect or faulty, please contact us at support@oztoner.com with this information:
- Your order number
- Detailed description of the reason for return/exchange request
- Photo proof (if applicable).
For exchanges, the product/s must be in the original (new/unused) condition that you received it, in its original packaging. The customer is responsible for the postage fee to send the product/s back to us. OZ Toner will pay the postage to send the new product/s to the customer. All product/s sent back to us must use tracked post, we are not responsible for product/s lost in transit.
Exchange/Return (Hardware)
OZ Toner allows exchange/return within 30 days of receiving your order. This applies to hardware products purchased from us: scanners and printers.
If any hardware goods purchased from OZ Toner are damaged, lost in transit, incorrect or faulty, please contact us at support@oztoner.com with this information:
- Your order number
- Detailed description of the reason for return/exchange request
- Photo proof (if applicable).
Please ensure to contact us via email at support@oztoner.com before returning any items to obtain a Return Authorization Number. Return Authorizations are only valid for 14 days.
It is your obligation to pack returned products satisfactorily to prevent any damage to the items or boxes. You have a legal obligation to take reasonable care of the product/s while they are in your possession until they reach our warehouse.
When returning your purchase, we ask that you provide a Proof of Purchase (Order Confirmation Email) and where possible the product/s in original unopened packaging.
Once received back, we will issue a replacement or full/partial refund depending on actual case.
Change of Mind Returns
Please choose carefully as we do not provide a refund if you have simply changed your mind or made a wrong selection.
If you wish to exchange product/s which you have purchased in error, we will happily exchange provided that:
- You return the product/s within 30 days of purchase.
- You provide Proof of purchase (Your Order Confirmation Email)
- Product/s are unopened, unused and in its original packaging.
- A minimum of 20% restocking fee applies.
- You must bear the risk of return and is responsible for the costs of return postage.
- You must confirm the product/s are received and notify us before returning the product/s, the product/s being returned must satisfy all the return requirement stated above.
- The initial shipping fee charged, or any outbound postage incurred to ship to the customer will not be refunded or credited.
We reserve the right not to offer an exchange if the above requirements are not met.
Return shipping and costs are the responsibility of the customer. We recommend customers to send the item back with a tracked service. For high value products, the customer is also advised to use an insured shipping method.
Faulty or Damaged items
We provide refund or replacement on defective and damaged products.
You MUST contact us within 30 days of product/s being received and believed to be faulty. We will provide the contact information of manufacturer. Customer MUST contact manufacturer to request return authorization letter / DOA letter. Once we received the RA letter or DOA letter from the customer, we will initiate the return process and send customer our return instruction. When the goods are returned to us, we will offer either refund or replacement for the customer.
Items with Manufacturer Warranty:
Buyers must contact manufacturer of the item for all the warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
Items with Onsite Manufacturer Warranty:
Buyers must contact manufacturer of the item for all the on-site warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
Items with Return to Base Warranty:
Buyers are responsible to send back the faulty item to us. Items with valid warranty within the warranty period will be replaced with fully functional unit after checking. Please allow up to 2 weeks for replacement. We have no guarantee on product compatibility with buyers own equipment unless specified on the item listing.
Any other issues and queries, customers are welcome to send us message and email to discuss further.
Refund Conditions
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Refunds are only issued under certain circumstances, such as:
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DOA products where no exchange/replacement is possible
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Incorrect supply where the proper model cannot be provided
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Approved cases where neither replacement nor upsell option is available
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All refunds must be pre-approved by OzToner.au management before processing.
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Refunds are made via the original payment method and typically processed within 7 business days after approval.
Delivery Charges
Any product/s replaced under the Returns Policy due to being damaged, faulty or incorrect will be delivered to you free of charge.
Any returns due to you changing your mind about your purchase will incur a re-delivery fee.
Consumer Guarantees
Under the Australian Consumer Law, you have Consumer Guarantees for Goods and Services You purchase. Our product/s come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the product/s repaired or replaced if the product/s fail to be of acceptable quality and the failure does not amount to a major failure.
Where you believe an item is faulty, you must contact manufacturer to for it to be assessed within a reasonable period of time, and you must request return authorization letter from the manufacturer if the item is confirmed faulty. If there is a major failure with the item, and you have forwarded the return authorization letter granted by manufacturer to us, you may choose a refund or exchange. If the failure is minor, manufacturer will honor the warranty and repair the item for you within a reasonable time.
Where an item is damaged through misuse or abnormal use, OZ Toner cannot provide a refund, exchange or repair, whether the fault is identified by OZ Toner, the manufacturer or their service agent.
OZ Toner will require satisfactory proof of purchase before providing a remedy under the Australian Consumer Law.
For further information about the Australian Consumer Law and Consumer Guarantees, visit www.consumerlaw.gov.au.


