New with box.MasaiMara 55B1X00 Extra High Capacity Compatible Black Toner Cartridge Replacement for Lexmark MS431dn MS431dw MX431adn MX431adw MX432adwe MS431 MX431 MX432 Printer (1-Pack)

• Precise Model Fit – 55B1X00: This cartridge is engineered exclusively as the 55B1X00 replacement unit. It is not a universal fit; it is dimensionally and electronically matched to Lexmark laser printers for plug-and-play installation with zero configuration errors.
• Broad Printer Compatibility: Works seamlessly with Lexmark MS431dn, MS431dw, MX431adn, MX431adw, and MX432adwe printers. Each unit is factory-tested on actual machines from this series to guarantee proper gear alignment and chip recognition.
• Massive 20,000-Page Yield: Rated for up to 20,000 pages based on 5% letter/A4 coverage. This high capacity supports heavy monthly print volumes, reducing cartridge swaps during peak work periods and cutting downtime for large batch jobs.
• Top-Tier A-Grade Toner Formulation: Filled with premium-grade black toner powder that meets strict particle-size standards. This delivers razor-sharp text, dense solid fills, and smooth halftones, while minimizing internal dust contamination that can degrade printhead or fuser performance.
• Printer Protection Through Clean Burn Technology: The toner’s low-melt formulation fuses at optimal temperature, preventing excessive heat stress on the fuser roller. Non-abrasive micro-beads reduce drum wear, helping maintain your printer’s rated service life over multiple cartridge cycles.
• Consistent Image Density from First Page to Last: Engineered for uniform charge stability, this cartridge maintains steady black density across the entire 20,000-page run. No fading, streaking, or background ghosting appears even when printing heavy coverage documents like presentations or blueprints.
• Sealed Anti-Leak Packaging: Each cartridge is individually vacuum-sealed with a foam cradle to prevent toner shift during shipping. The waste-bin overflow protection and magnetic seal further eliminate loose powder, keeping your printer interior clean.
• Ready-to-Use Out of the Box: No shaking, resetting, or firmware updates required. Simply remove the protective tape, insert the cartridge, and close the cover – your printer will recognize the new unit immediately and display accurate remaining-toner status.