On this page
- Why choose the genuine Lexmark 40X8421 maintenance kit
- When to replace it
- Printers compatible with the 40X8421
- Installation
- Use and tips
- Specifications
- Frequently asked questions
Why choose the genuine Lexmark 40X8421 maintenance kit
Genuine Lexmark maintenance kit: manufacturer-specified wear parts with original dimensions and materials. Replacing at the counter avoids jams, marks and wear on other parts, and preserves the printer's service contract.
When to replace it
The printer shows a message when the part's counter reaches end of life (Supplies status or Reports menu). Replacing it then avoids downtime and wear on other parts.
Printers compatible with the 40X8421
The 40X8421 is compatible with the following models and series (manufacturer data):
- MS812dn
- MS810de
- MS810dtn
- MS811dtn
- MS812de
- MS811dn
- MS810n
- MS812dtn
- MS810dn
- MS811n
Check the exact reference of your printer (label or Information menu); suffixes are variants of the same series and generally use the same consumables. If in doubt, send us the exact model.
Installation
Installation described in the manufacturer's maintenance guide: switch the printer off, let hot parts cool down before working, replace the part, then reset the counter in the maintenance menu. A technician is recommended for fuser and transfer units.
Use and tips
Order as soon as the end-of-life message appears to avoid printer downtime.
Keep the part in its packaging until the intervention. After installation, check that the counter has restarted from zero (Supplies status or Maintenance menu).
Specifications
| Manufacturer reference | 40X8421 |
|---|---|
| EAN code | 734646498036 |
| Type | Maintenance kit |
| Brand | Lexmark |
| Origin | Taiwan |
| Compatible printers | 10 models or series |
Frequently asked questions
Is the 40X8421 compatible with my printer?
Yes if it appears in the list above. If in doubt, send us the exact model (e.g. "MS812dn") and we confirm.
Genuine or compatible?
We sell genuine Lexmark parts and consumables only: dimensions and lifetime in line with the manufacturer's data, printer warranty preserved.
Where can I find the safety data sheet?
The safety data sheet (SDS) for the 40X8421 and the manufacturer documentation are available on request from our customer service: contact us.