Print Head OKI ML5520/21

The OKI ML5520/21 print head (MPN 41923901, EAN 5705965779712) is a 9-pin replacement print head designed for OKI impact printers ML5520 and ML5521. It delivers consistent dot-matrix output for documents and multi-part forms, offering compatibility and reliable operation for office and business printing needs.

Advantages

This 9-pin print head is manufactured to match OKI specifications for the ML5520 and ML5521 series, ensuring accurate character formation and uniform print density. The part provides straightforward replacement with compatible printers and is built for steady performance over extended use.

Suitable for

• Replacing a worn or damaged print head in OKI ML5520 or ML5521 printers
• Printing invoices, receipts and multi-part forms
• Office environments requiring durable impact printing

Key specifications

• Manufacturer: OKI
• Model compatibility: ML5520, ML5521
• MPN: 41923901
• EAN: 5705965779712
• Pin configuration: 9-pin
• Product type: Print head (impact/document printer)

How to use

Power off the printer and follow the printer manufacturer instructions for removing the old print head. Install the OKI ML5520/21 print head into the designated carriage or holder, secure any locking mechanisms, and reconnect power. Run a printer alignment or test print according to the printer manual to verify correct installation and print quality.

Usage recommendations

Use genuine OKI replacement parts where possible and handle the print head carefully to avoid damage to the pins. Perform regular maintenance checks and replace the print head when print quality degrades or when indicated by the printer.