Description

The Genuine Lexmark B346X00 Black Extra High Yield Return Program Toner Cartridge is the highest-capacity Return Program toner option for compatible Lexmark B3442 and MB3442 Series monochrome laser printers and multifunction devices.
Delivering an approximate yield of 6,000 standard pages in accordance with ISO/IEC 19752, the B346X00 is designed for busy offices and higher-volume users who want to print longer between cartridge changes while reducing their ongoing cost per page.
✓ Genuine Lexmark Original toner cartridge
✓ Lexmark Part Number: B346X00
✓ Black Extra High Yield toner
✓ Approx. 6,000-page yield
✓ Declared yield in accordance with ISO/IEC 19752
✓ Lexmark Return Program cartridge
✓ Genuine Lexmark Unison™ Toner technology
✓ Compatible with Lexmark B3442dw and MB3442i
✓ 2× the rated capacity of B346H00 3K High Yield toner
✓ 4× the rated capacity of B346000 1.5K Standard Yield toner
✓ Ideal for regular and higher-volume business printing
Lexmark's 6,000-Page Extra High Yield Option
The Lexmark B346X00 sits at the top of the Return Program toner range for compatible B3442 and MB3442 printers.
With approximately 6,000 pages of rated capacity, it provides twice the rated yield of the 3,000-page B346H00 High Yield cartridge and four times the rated yield of the 1,500-page B346000 Standard Yield cartridge.
For businesses that print regularly, this larger capacity means fewer interruptions for toner replacement and can provide a lower overall cost per page.
Key Features
- Brand: Lexmark
- Part Number: B346X00
- Product Type: Genuine Extra High Yield Return Program Toner Cartridge
- Colour: Black
- Yield: Approx. 6,000 standard pages
- Yield Standard: ISO/IEC 19752
- Yield Class: Extra High Yield
- Toner Technology: Lexmark Unison™ Toner
- Condition: Brand New Genuine Lexmark
Compatible Lexmark Printers
The Genuine Lexmark B346X00 Extra High Yield Black Toner Cartridge is designed for compatible Lexmark B3442 and MB3442 Series printers, including:
- Lexmark B3442dw
- Lexmark MB3442i
- Lexmark MB3442adw
The B3442dw is a compact single-function monochrome laser printer, while the MB3442i provides print, copy and scan functionality for businesses requiring a complete multifunction solution.
Important: Lexmark replacement toner cartridges are designed for specific geographical regions. Please confirm your printer model and cartridge part number before ordering.
Choose the Right Toner Capacity
Compatible Lexmark B3442 / MB3442 printers support three Return Program toner capacities, allowing customers to match cartridge capacity to their actual print volume.
| Cartridge | Capacity | Approx. Yield | Best For |
| B346000 | Standard Yield | 1,500 pages | Light / occasional printing |
| B346H00 | High Yield | 3,000 pages | Regular office printing |
| B346X00 | Extra High Yield | 6,000 pages | Higher-volume business printing |
If you require a lower-capacity cartridge, the Lexmark Genuine Toner range also includes Standard Yield and High Yield options for compatible Lexmark printers.
Why Choose the B346X00 Extra High Yield Cartridge?
For customers who use their B3442dw or MB3442i regularly, the B346X00 is generally the most practical cartridge capacity in the Return Program range.
- B346000: Approx. 1,500 pages
- B346H00: Approx. 3,000 pages
- B346X00: Approx. 6,000 pages
The B346X00 therefore provides approximately four times the rated page capacity of the Standard Yield cartridge and twice the rated capacity of the High Yield cartridge.
That means fewer toner changes, less time spent maintaining the printer and potentially a lower cost per printed page.
Genuine Lexmark Unison™ Toner
Lexmark Unison™ Toner is engineered as part of the complete Lexmark printing system. Its formulation is designed to deliver consistent monochrome image quality, dependable toner flow and reliable print-system performance throughout the cartridge's operating life.
The B346X00 is particularly well suited to professional documents including:
- Invoices and quotations
- Business reports
- Contracts and correspondence
- Accounting documents
- Medical and professional records
- Forms and administrative documents
- Education and training material
- Higher-volume everyday office printing
Lexmark Return Program Cartridge
The B346X00 is a Lexmark Return Program cartridge. Lexmark Return Program cartridges are sold subject to Lexmark's Return Program conditions in exchange for the customer's agreement that the cartridge will be used only once and returned to Lexmark for remanufacturing or recycling.
Customers who prefer a regular non-Return-Program cartridge should note that Lexmark also offers the B340XA0 6,000-page Regular Cartridge for compatible printers. B346X00, however, is specifically the 6,000-page Extra High Yield Return Program version.
Product Specifications
| Brand | Lexmark |
| Part Number | B346X00 |
| Product Type | Genuine Extra High Yield Return Program Toner Cartridge |
| Colour | Black |
| Yield Class | Extra High Yield |
| Page Yield | Approx. 6,000 standard pages |
| Yield Standard | ISO/IEC 19752 |
| Toner Technology | Lexmark Unison™ Toner |
| Program | Lexmark Return Program |
| Packaged Dimensions | Approx. 160 × 170 × 370 mm |
| Packaged Weight | Approx. 1.02 kg |
| Country of Origin | China (PRC) |
| Quantity | 1 × Black Toner Cartridge |
| Condition | Brand New Genuine Lexmark |
Separate Toner & Imaging Unit Design
The toner cartridge and imaging unit are separate consumables in compatible Lexmark B3442 and MB3442 printers. This listing includes one Genuine Lexmark B346X00 Black Extra High Yield Toner Cartridge only and does not include the imaging unit.
The compatible imaging unit is rated for up to approximately 40,000 pages, depending on printer usage, average print-job length and operating conditions.
Ideal For
- Small and medium businesses
- Busy offices and workgroups
- Higher-volume monochrome printing
- Accounting and legal practices
- Medical and dental practices
- Schools and education environments
- Administration departments
- Customers wanting fewer toner replacements
- Users seeking a lower cost per page from genuine Lexmark toner
Why Choose Genuine Lexmark B346X00?
The B346X00 combines genuine Lexmark print quality with the largest Return Program toner capacity available for compatible B3442 and MB3442 printers.
For customers operating the Lexmark B3442dw or Lexmark MB3442i, its approximately 6,000-page capacity makes it particularly attractive for regular business printing where reducing cartridge changes and ongoing cost per page are priorities.
Frequently Asked Questions
Is B346X00 a genuine Lexmark toner cartridge?
Yes. This listing is for a Genuine Lexmark B346X00 Black Extra High Yield Return Program Toner Cartridge.
How many pages does the Lexmark B346X00 print?
The B346X00 provides an average continuous cartridge yield of up to approximately 6,000 standard pages in one-sided printing mode, with the declared yield determined in accordance with ISO/IEC 19752. Actual yield varies according to document coverage, print-job characteristics and operating conditions.
Is B346X00 High Yield or Extra High Yield?
B346X00 is Lexmark's Extra High Yield Return Program cartridge for this printer family, with an approximate rated capacity of 6,000 pages.
Does B346X00 work with the Lexmark B3442dw?
Yes. B346X00 is officially compatible with the Lexmark B3442dw.
Does B346X00 work with the Lexmark MB3442i?
Yes. B346X00 is officially compatible with the Lexmark MB3442i.
Does B346X00 work with the Lexmark MB3442adw?
Yes. Lexmark also officially lists the MB3442adw as a compatible device for B346X00.
What is the difference between B346000, B346H00 and B346X00?
The main difference is capacity. B346000 is the Standard Yield cartridge at approximately 1,500 pages, B346H00 is the High Yield cartridge at approximately 3,000 pages, and B346X00 is the Extra High Yield cartridge at approximately 6,000 pages.
Which cartridge offers the best option for higher-volume printing?
For customers who print regularly, the B346X00 6,000-page Extra High Yield cartridge provides the largest capacity in the Return Program range. It requires fewer cartridge changes than the 1,500-page or 3,000-page options and will generally provide the most attractive cost per page where purchase pricing supports it.
What is the difference between B346X00 and B340XA0?
Both are rated for approximately 6,000 pages and are compatible with the B3442 / MB3442 printer family. The key difference is that B346X00 is a Lexmark Return Program cartridge, while B340XA0 is the regular non-Return-Program cartridge.
What does Lexmark Return Program mean?
Lexmark Return Program cartridges are sold subject to Lexmark's Return Program conditions. The customer agrees to use the cartridge once and return the empty cartridge to Lexmark for remanufacturing or recycling.
Does B346X00 include the imaging unit?
No. The imaging unit is a separate consumable. This listing includes one Genuine Lexmark B346X00 Black Extra High Yield Toner Cartridge only.
Last Updated Date: 16 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.


