OKI B731dn Toner Cartridges
Your OKI B731dn printer uses the OKI 45488903 and 45439003 toner cartridge series along with 45435104 fuser units. Our 4.8 Google Star rating shows that our customers consistently receive high-quality cartridges backed by reliable performance. Choosing 45439003 high-capacity Black toner cartridges over 45488903 standard options extends print cycles and minimises cartridge changes in demanding corporate environments.
Yield expectations for OKI B731dn toner
Page yields for OKI laser toner cartridges are measured under ISO/IEC 19752 standards for monochrome print coverage. The high-capacity 45439003 cartridge delivers up to 36,000 pages, while the 45488903 cartridge yields up to 25,000 pages, keeping cost per page ultra-low during high-volume document printing.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 45488903 | Standard | Black | 25,000 | $0.052 |
| 45439003 | High Yield | Black | 36,000 | $0.039 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Fuser unit replacement for OKI B731dn
The OKI B731dn requires a 45435104 fuser unit to bond toner to paper at high speeds. Rated for up to 200,000 pages, this fuser unit outlasts multiple toner cartridges before requiring replacement.
Choosing toner cartridges and dispatch details
If your office prints heavy volumes of reports, invoices, or manual stacks daily, choosing the 45439003 toner cartridge offers maximum efficiency and the lowest operational expense. Order genuine consumables with confidence knowing all purchases are supported by our Returns policy. We dispatch directly from distribution centres in Sydney, Melbourne, Brisbane, Perth, and Adelaide. Free delivery applies on all orders over $99. Browse our complete range of OKI toner cartridges to keep your office supplied.
Commercial print pro tip
Keep track of page counts alongside toner levels; while toner replacement is required regularly, the 45435104 fuser unit reaches its 200,000-page threshold after approximately five to eight 45439003 toner cartridge cycles.
Frequently Asked Questions
How does the 45439003 toner cartridge differ from the 45488903 cartridge?
Both cartridges fit the OKI B731dn printer identically. The 45439003 is a higher-yield cartridge delivering 36,000 pages compared to the 25,000-page capacity of the 45488903, offering a lower cost per printed page.
How often does the OKI 45435104 fuser unit need to be changed?
The 45435104 fuser unit has an estimated lifecycle of 200,000 pages, meaning it usually lasts through several toner cartridge replacements before needing to be renewed.
How does ISO/IEC 19752 testing impact actual toner page yield in high-volume offices?
Yields are calculated based on standard 5% page coverage. Printing dense text, spreadsheets, or graphics uses more toner per page, which reduces total yield proportionally relative to standard coverage baselines.
