Frequently asked questions
With which Prusa printers is this heater cartridge compatible?
Compatible with Prusa MK4, MK4S, MK3.9, MK3.9S, XL, CORE One, CORE One+, and CORE One L. Not compatible with MK3.5, MK3.5S, MK3S+, MK3, MK2.5S, MK2.5, MINI, MINI+, MMU3, SL1S, HT90, or INDX.
What is included in the packaging for this resistor?
The packaging includes 1 heating element 40W – 120 mm and 2 M3×4 fixing screws — everything you need for replacement without having to purchase additional parts.
How do I know if the heating element needs replacing?
Typical symptoms: failure to reach extrusion temperature, erratic temperature readings, temperature error in the firmware, or visible physical damage (burnt, broken, oxidized).
Where can I find the installation manual?
The repair manual is available at help.prusa3d.com — select your specific printer model to access the step-by-step heater replacement guide.