What the E3D Prusa 0.4 mm nozzle is for

The E3D Prusa Nozzle for MK4/XL - 0.4mm is a high-quality 3D printing nozzle designed specifically for Prusa’s latest extruder, Nextruder. Built for Prusa MK4 and XL printers, the nozzle provides a dedicated fit that supports reliable printing and faster nozzle swaps.

The nozzle uses an all-metal filament guide, which means the Nextruder filament path is entirely metal. That construction helps improve overall printer reliability while also enabling speedier nozzle changing.

Key features and practical benefits

• Designed for Nextruder: Made specifically for Prusa’s latest extruder system rather than as a general-purpose nozzle.
• Compatible with MK4 and XL: Intended for Prusa MK4 and Prusa XL 3D printers.
• All-metal filament path support: The all-metal filament guide keeps the Nextruder filament path entirely metal.
• Improved reliability: The metal filament path helps support more dependable printer operation.
• Simplified nozzle changes: The nozzle design makes changing nozzles easier, reducing downtime when switching sizes or materials.
• Engraved size marking: Each nozzle has its size engraved into it for quick identification.

How the 0.4 mm MK4/XL nozzle is commonly used

This 0.4 mm nozzle suits users who want a standard nozzle size for general 3D printing on Prusa MK4 and XL machines. It is also useful for makers and operators who change nozzle sizes or materials regularly and want a faster, simpler nozzle-change process.

The engraved size marking makes the nozzle easier to sort and identify in workshops, classrooms, and multi-nozzle setups. For Nextruder-based printing, the all-metal filament path also supports a more robust setup focused on reliability.