# Hotend & Nozzle

The Prusa i3 MK3S uses a standard E3D V6 hotend. The hotend consists of the following parts:

1. The heatsink
2. The heatbreak
3. The heater/hot block
4. Heater Cartridge
5. Thermistor
6. Cooling Fan
7. Teflon/PTFE tube that acts as a filament guide

![Image from E3D Online](https://1820679795-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LXautSvCbUco5Lv7YrH%2F-MS0Scof88G4_jTTD-NP%2F-MS0j_xVaFe8oXU1DG0u%2Fimage.png?alt=media\&token=1e07b863-1915-49d9-81da-56aa06bf8d01)

![Image from 3DPrinting Stack Exchange](https://1820679795-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LXautSvCbUco5Lv7YrH%2F-MS0QYf_gIdKWeIGNNGN%2F-MS0S9sMvL6haWUVNb3d%2Fimage.png?alt=media\&token=d6d8177d-dd3b-4788-9106-88008d4c2665)

For details on how to assembled/disassemble the hotend itself (note that the blue fan shroud and fan is not necessary in the i3 MK3S), read here:

{% embed url="<https://e3d-online.dozuki.com/Guide/V6+Assembly/6?lang=en>" %}

E3D's ecosystem makes swapping nozzles to different sizes or types easy. If the nozzle has an M6 thread which is sufficiently long enough, it can be used.

{% hint style="danger" %}
**Swapping the nozzle on the V6 requires a little finesse as there's a chance to easily break the heatbreak if not done properly.**
{% endhint %}

**Read here to find out more:**

{% embed url="<https://help.prusa3d.com/en/article/changing-or-replacing-the-nozzle-mk2-5s-mk3s-mk3s_2069>" %}