Compare the cartridge references.
The figures below are manufacturer benchmarks for original replacement cartridges, based on ISO/IEC 19752. Actual yield varies with print content and use. Compatible yields may differ; we confirm the exact product specification in your quote.
| Reference / colour | Capacity | Approx. pages |
|---|---|---|
| 45488802 ↗Black | Standard | 18,000 |
| 45439002 ↗Black | High | 36,000 |
Choose a reference to carry it into your enquiry. This requests a checked match and quotation; it does not place an order or reserve stock.
Match the reference to your printer.
These checked examples apply to the references shown beside them. They are not a complete compatibility list. A higher-capacity cartridge may fit fewer printers than the standard version. Send your full model so we can confirm the right Compatible or Original option.
- 45488802
- B721dn, B731dnw, MB760dnfax, MB770dn
- 45439002
- B731dnw, MB770dn
Example printers for this family.
These are verified examples, not a complete compatibility list. Include your full model and region so we can confirm the specific cartridge before you order.
- OKI B721dn — get a price ↗
- OKI B731dnw — get a price ↗
- OKI MB760dnfax — get a price ↗
- OKI MB770dn — get a price ↗
Different model suffixes, regional cartridges, chips, firmware or subscription arrangements may require a further check. If your model is not listed, ask us to identify your toner.
The 36,000-page cartridge has narrower model coverage
45488802 is the 18,000-page replacement reference for B721dn, B731dnw, MB760dnfax and MB770dn. The larger 45439002 benchmark is 36,000 pages, with verified coverage here limited to B731dnw and MB770dn.
Ask for a Compatible quote first and include the full printer suffix; Original is available as an alternative. For regular printing, compare the quoted price and stated yield of each supported option, while keeping maintenance-kit requirements separate from toner.
Replacing toner or another supply?
Toner cartridges, image drums, transfer belts, fusers and waste-toner supplies are different parts. Send the exact display message and complete printer model so we can check which replacement you need.
Help with toner and drum identification ↗What to include for a clear quote.
- Full printer model and cartridge reference, if known.
- Colour and quantity, including individual replacements or a complete set.
- Delivery postcode, deadline and any recognition or firmware message.
We check suitable compatible options first and confirm the product, current price and delivery before you agree an order. Original toner is available if your organisation specifies it.
Get my OKI toner quote ↗OKI Compatible toner help from our Cartridge Care Manchester website ↗. Brand names identify the printers and original reference families; they do not imply manufacturer endorsement.