The MK4->MK4S Upgrade Kit contains everything you need to fully upgrade your stock MK4 3D printer to the new MK4S.

This upgrade is supplied as a kit - you need to assemble it yourself. Before you order the kit, please see the product description (part xLCD info) for compatibility information.

Includes:
Prusa Nozzle brass CHT - 0.4mm
High-performance 360° cooling fan and fan shroud
Nextruder parts (including PCCF printed parts)
Wi-Fi board and NFC antenna
Cover for xLCD and Nextruder cover
Silicone cover for heatblock
Fasteners and other accessories

Fits: Prusa MK4

To correctly install this replacement part, visit [link removed by ] , select your specific printer model, and follow the instructions provided in the repair manual.

!!! Important !!!
xLCD Info
Before you order the upgrade, please check which xLCD your printer came with. This is important for correct compatibility with the upgrade. Depending on the selected options, we can send you additional components to ensure compatibility with the upgrade.

The top image is of the NEWER version of the xLCD, if you have this version please choose the "MK4 -> MK4S (for newer version of xLCD)" upgrade.
The bottom image is of the OLDER version of the xLCD, if you have this version please choose the "MK4 -> MK4S (for older version of xLCD)" upgrade.

Prusa MK4S - Declaration of Conformity