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3D printer components

Spare nozzles and replacement parts for the components that wear out or break first.

A clogged or worn nozzle, a Bowden tube that pops loose or a bed that needs levelling over and over: it is often the smallest parts that bring a printer to a halt. Here you will find brass nozzles for MK7/MK8 and E3D V5/V6 hotends, PC4 push fittings for PTFE tubing, stiffer bed springs and an aluminium extruder upgrade for Creality printers. Read more…

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Which part do you need?

ProblemPartFits
Nozzle clogged, damaged or wornNozzle MK7/MK8 brassMK7/MK8 extruders, such as Creality Ender 3, Ender 5, CR-10 and CR-20, Anet A6/A8, Wanhao and Prusa i3 with MK8 extruder
The same, with an E3D hotendNozzle M6 E3D V5 / V6E3D V5 and V6 hotends, including in the Anycubic i3 Mega and Monoprice Select Mini
Bowden tube pops loose or no longer holdsPC4-M6 or PC4-01 push fittingPTFE tubing with 4 mm outer diameter
Bed keeps needing to be levelledYellow bed springs, set of 4Including Creality Ender-2, Ender-3 (Pro, V2), CR-10 and CR-10S
Plastic extruder worn or crackedAluminium MK8 extruder upgradeCreality Ender-3, Ender-5, CR-10 and CR-20 (series)

MK8 or E3D V6: which nozzle fits?

Both nozzles are made of brass, have an M6 thread and are for 1.75 mm filament, with openings from 0.2 to 1.0 mm. They differ in length: the MK7/MK8 nozzle is 13 mm, the E3D nozzle 12.5 mm. So choose based on your hotend, not on the thread. Brass conducts heat well, but wears faster with carbon or glass fibre filament. If you print a lot of that, replace the nozzle more often or use a hardened steel nozzle.

How to replace a nozzle

  • Heat up: heat the hotend to printing temperature and remove the filament.
  • Hold: hold the heater block with a spanner so it does not turn.
  • Unscrew: unscrew the old nozzle. Careful: it is hot.
  • Tighten: screw in the new nozzle and tighten it while the hotend is warm, firmly but without forcing it.
  • Check: then recalibrate the distance between nozzle and bed.

If the nozzle is only clogged, cleaning is often enough. You will find a stainless steel needle and a copper brush under maintenance.

Bowden tube, bed and extruder

The PC4 push fittings clamp PTFE tubing with an outer diameter of 4 mm. The PC4-M6 has an M6 thread and comes with and without pass-through; with the pass-through version and the PC4-01 (M10 thread), the tube can go right through the fitting. The yellow bed springs (8 mm outer diameter, 25 mm high) are stiffer than standard springs. They give way less easily, so the bed stays level for longer. The aluminium extruder replaces the plastic extruder of Creality printers, in which the filament wears a groove over time. It is easy to fit.

You will find more tools for your printer in our 3D printer accessories.

Frequently asked questions

  • Which nozzle fits my 3D printer?

    That depends on your hotend. Printers with an MK7/MK8 extruder, such as most Creality Ender and CR models, use the MK7/MK8 nozzle. If your printer has an E3D V5 or V6 hotend, choose the M6 E3D nozzle. Both are for 1.75 mm filament.

  • When should I replace my nozzle?

    When the print gives thin or irregular layers despite good settings, when the nozzle stays clogged after cleaning, or when the tip is damaged or the opening is worn. If you print a lot with carbon or glass fibre, a brass nozzle wears faster.

  • Which nozzle diameter should I choose?

    Most printers use a 0.4 mm nozzle as standard, a good balance between detail and speed. A smaller opening such as 0.2 mm gives finer detail but prints more slowly; a larger opening prints faster and gives sturdier walls. After changing, adjust the line width in your slicer.

  • What is the difference between the PC4-01 and PC4-M6 push fitting?

    The thread: the PC4-M6 has an M6 thread, the PC4-01 an M10 thread. Both are for PTFE tubing with a 4 mm outer diameter. The standard PC4-M6 has no pass-through; with the PC4-M6 pass-through and the PC4-01, the tube can go right through the fitting.

  • Why replace my plastic extruder?

    The filament always runs along the same spot and over time wears a groove in the plastic. That affects print quality. The aluminium MK8 extruder is a direct replacement for, among others, the Creality Ender-3 (Pro, V2), Ender-5 and CR-10.