Choosing a replacement nozzle starts with the part that fits your printer. MK8, V6 and Volcano describe different nozzle shapes; 0.4 mm describes the opening that the plastic comes out of. This guide helps you check the fit, choose a material and size, and prepare for the change.
Find your printer's nozzle system
Check 24 common Creality, Prusa and Bambu Lab models. These matches describe the original hotend, the heated assembly that melts filament. A different hotend can need a different nozzle.
Browse the printer reference
These are factory configurations. If yours has been modified, identify the fitted hotend instead.
Creality
Ender-3
Original nozzle system: MK8 nozzle
The original hotend takes a short, screw-in MK8 nozzle for 1.75 mm filament.
Look for a matching MK8 nozzle. Compare the original nozzle's thread and length with the replacement drawing. Follow the printer's nozzle-changing instructions.
Ender-3 Pro
Original nozzle system: MK8 nozzle
The original hotend takes a short, screw-in MK8 nozzle for 1.75 mm filament.
Look for a matching MK8 nozzle. Compare the original nozzle's thread and length with the replacement drawing. Follow the printer's nozzle-changing instructions.
Ender-3 V2
Original nozzle system: MK8 nozzle
The original hotend takes a short, screw-in MK8 nozzle for 1.75 mm filament.
Look for a matching MK8 nozzle. Compare the original nozzle's thread and length with the replacement drawing. Follow the printer's nozzle-changing instructions.
Ender-3 S1
Original nozzle system: MK8 nozzle
The original hotend takes a short, screw-in MK8 nozzle for 1.75 mm filament.
Look for a matching MK8 nozzle. Compare the original nozzle's thread and length with the replacement drawing. Follow the printer's nozzle-changing instructions.
Ender-3 S1 Pro
Original nozzle system: MK8 nozzle
The original hotend takes a short, screw-in MK8 nozzle for 1.75 mm filament.
Look for a matching MK8 nozzle. Compare the original nozzle's thread and length with the replacement drawing. Follow the printer's nozzle-changing instructions.
Ender-3 V3 SE
Original nozzle system: Creality high-speed nozzle for Ender-3 V3 SE / Ender-5 S1
This uses Creality's longer high-speed nozzle format. The similar printer name does not make it the same nozzle as an older Ender-3.
Use the nozzle specified for this exact model. Look for explicit Ender-3 V3 SE or Ender-5 S1 compatibility. Do not select MK8, V6 or Volcano from the M6 thread alone. If a ceramic quick-swap upgrade has been fitted, identify that upgrade instead.
Ender-3 V3 KE
Original nozzle system: Creality high-flow nozzle for Ender-3 V3 KE
The original KE hotend uses the separate high-flow nozzle listed by Creality for the KE and older K1-style hotends.
Use an Ender-3 V3 KE compatible nozzle. Choose a part that explicitly lists Ender-3 V3 KE. Do not assume a generic Volcano nozzle fits because both are long. A fitted quick-swap upgrade changes the required part.
Ender-3 V3 (CoreXZ)
Original nozzle system: Creality Unicorn integrated nozzle
The nozzle and the long metal tube above it form one replacement part.
Use the correct Unicorn version for this model. Choose a Unicorn nozzle that explicitly lists your model. A loose MK8, V6 or Volcano nozzle is not the original replacement format.
Ender-3 V3 Plus
Original nozzle system: Creality Unicorn integrated nozzle
The nozzle and the long metal tube above it form one replacement part.
Use the correct Unicorn version for this model. Choose a Unicorn nozzle that explicitly lists your model. A loose MK8, V6 or Volcano nozzle is not the original replacement format.
Ender-5 S1
Original nozzle system: Creality high-speed nozzle for Ender-3 V3 SE / Ender-5 S1
This uses Creality's longer high-speed nozzle format. The similar printer name does not make it the same nozzle as an older Ender-3.
Use the nozzle specified for this exact model. Look for explicit Ender-3 V3 SE or Ender-5 S1 compatibility. Do not select MK8, V6 or Volcano from the M6 thread alone. If a ceramic quick-swap upgrade has been fitted, identify that upgrade instead.
K1C
Original nozzle system: Creality Unicorn integrated nozzle
The nozzle and the long metal tube above it form one replacement part.
Use the correct Unicorn version for this model. Choose a Unicorn nozzle that explicitly lists your model. A loose MK8, V6 or Volcano nozzle is not the original replacement format.
K1
Original nozzle system: Check the fitted K1 hotend version
K1 and K1 Max have older separate-nozzle and newer integrated-nozzle versions. The printer name alone is not enough to choose the part.
Version check needed before buying. Compare your hotend with Creality's old and new nozzle replacement guides, or ask for help with a clear photo and the hotend's part number. Do not buy a generic Volcano nozzle based only on its length.
K1 Max
Original nozzle system: Check the fitted K1 hotend version
K1 and K1 Max have older separate-nozzle and newer integrated-nozzle versions. The printer name alone is not enough to choose the part.
Version check needed before buying. Compare your hotend with Creality's old and new nozzle replacement guides, or ask for help with a clear photo and the hotend's part number. Do not buy a generic Volcano nozzle based only on its length.
Prusa
Original Prusa i3 MK3S+
Original nozzle system: V6-compatible nozzle
The original hotend takes a separate V6-compatible nozzle for 1.75 mm filament.
Look for a matching V6 nozzle. Follow Prusa's nozzle-changing guide for the required hot-tightening procedure, then select the matching nozzle size in your slicer.
Original Prusa MINI+
Original nozzle system: V6-compatible nozzle
The original hotend takes a separate V6-compatible nozzle for 1.75 mm filament.
Look for a matching V6 nozzle. Follow Prusa's nozzle-changing guide for the required hot-tightening procedure, then select the matching nozzle size in your slicer.
Original Prusa MK4
Original nozzle system: Prusa Nozzle for Nextruder
The original nozzle includes a long metal filament guide. A loose V6 nozzle needs the separate Nextruder V6 Nozzle Adapter.
V6 needs the Nextruder adapter. For a straightforward replacement, choose the correct Prusa Nozzle. Use a V6 nozzle only with the specified adapter and Prusa's installation instructions. Match standard-flow or high-flow settings to the fitted nozzle.
Original Prusa MK4S
Original nozzle system: Prusa Nozzle for Nextruder
The original nozzle includes a long metal filament guide. A loose V6 nozzle needs the separate Nextruder V6 Nozzle Adapter.
V6 needs the Nextruder adapter. For a straightforward replacement, choose the correct Prusa Nozzle. Use a V6 nozzle only with the specified adapter and Prusa's installation instructions. Match standard-flow or high-flow settings to the fitted nozzle.
Original Prusa XL
Original nozzle system: Prusa Nozzle for Nextruder
The original nozzle includes a long metal filament guide. A loose V6 nozzle needs the separate Nextruder V6 Nozzle Adapter.
V6 needs the Nextruder adapter. For a straightforward replacement, choose the correct Prusa Nozzle. Use a V6 nozzle only with the specified adapter and Prusa's installation instructions. Match standard-flow or high-flow settings to the fitted nozzle.
Prusa CORE One (Nextruder)
Original nozzle system: Prusa Nozzle for Nextruder
The original nozzle includes a long metal filament guide. A loose V6 nozzle needs the separate Nextruder V6 Nozzle Adapter.
V6 needs the Nextruder adapter. For a straightforward replacement, choose the correct Prusa Nozzle. Use a V6 nozzle only with the specified adapter and Prusa's installation instructions. Match standard-flow or high-flow settings to the fitted nozzle.
Bambu Lab
A1
Original nozzle system: Bambu A1 Series hotend with nozzle
Use the A1 Series replacement hotend with nozzle, rather than a loose threaded nozzle.
Use an A1 Series hotend. Choose the required hole diameter in an A1 Series hotend. Generic MK8, V6 and Volcano nozzles do not replace the original assembly.
A1 mini
Original nozzle system: Bambu A1 Series hotend with nozzle
Use the A1 Series replacement hotend with nozzle, rather than a loose threaded nozzle.
Use an A1 Series hotend. Choose the required hole diameter in an A1 Series hotend. Generic MK8, V6 and Volcano nozzles do not replace the original assembly.
P1P
Original nozzle system: Bambu P1 Series hotend with nozzle
The nozzle is part of the hotend unit. Bambu supplies a hotend alone or a complete assembly with the surrounding components.
Use a P1 Series hotend. Choose P1 Series when buying a complete assembly because P1 and X1 connectors differ. Generic MK8, V6 and Volcano nozzles do not replace the original nozzle unit.
P1S
Original nozzle system: Bambu P1 Series hotend with nozzle
The nozzle is part of the hotend unit. Bambu supplies a hotend alone or a complete assembly with the surrounding components.
Use a P1 Series hotend. Choose P1 Series when buying a complete assembly because P1 and X1 connectors differ. Generic MK8, V6 and Volcano nozzles do not replace the original nozzle unit.
X1 Carbon (X1C)
Original nozzle system: Bambu X1 Series hotend with nozzle
The nozzle is part of the hotend unit. Bambu supplies a hotend alone or a complete assembly with the surrounding components.
Use the X1C-compatible hotend or assembly. Choose the X1C-compatible version when buying a complete assembly. Generic MK8, V6 and Volcano nozzles do not replace the original nozzle unit.
Other printers
My printer is not listed
Check the exact nozzle specification.
Find the printer or hotend maker's replacement-nozzle page. Match the thread, thread length, overall length, sealing shape and filament diameter. If you are unsure, send NZN your printer model and clear hotend photos before ordering.
Choose your brand, exact model and hotend setup to see the replacement nozzle system.
Check the hotend setup above. A previous owner or upgrade may have changed which nozzle fits.
Identify the fitted hotend first
A printer model cannot confirm nozzle fit after a hotend change. Find the fitted hotend's name or part number and its replacement-nozzle instructions.
If it is unclear, send NZN the printer model and clear photos of the hotend. Do not order from the printer name or M6 thread alone.
MK8 vs E3D V6 vs Volcano
The hotend is the heated assembly that melts the filament. The nozzle fits into it. On traditional V6 and Volcano hotends, the nozzle must seal against the heatbreak, the narrow part between the hot and cool sections. The correct shape and length matter as much as the screw thread.
A matching thread does not guarantee a fit. MK8, V6 and Volcano nozzles can share an M6 thread while having different lengths and sealing positions. The wrong part can screw in but leave a gap where molten plastic leaks out.
| Format | Where you may find it | What to check |
|---|---|---|
| MK8 | Classic Creality machines such as the original Ender-3 and Ender-3 V2. | Confirm the exact model and original hotend. The Ender name also covers newer printers with different nozzles. |
| E3D V6 | E3D V6 hotends, Prusa MK3-series and MINI/+, and confirmed V6-compatible upgrades. | Match V6 geometry and filament diameter. Prusa Nextruder needs its specific V6 adapter to use these nozzles. |
| Volcano | E3D Volcano and confirmed Volcano-compatible hotends. | A longer nozzle used with a matching heater block to support higher flow. A high-speed printer does not necessarily use Volcano. |
How to identify what you have
- Find the exact printer model. Include suffixes such as V2, V3 SE or V3 KE. Similar names can use different parts.
- Check for a hotend upgrade. The printer's original specification no longer identifies the nozzle if someone has changed the hotend.
- Use the manual and part dimensions. Compare the whole nozzle, including threaded length and overall shape. Do not remove it just to compare unless you can follow the correct replacement procedure.
- Check the filament diameter too. A nozzle for 1.75 mm filament is different from one intended for 2.85 mm filament. This inlet size is separate from the small opening at its tip.
Prusa's nozzle-system guide explains the V6 and Nextruder distinction. Creality's model-specific support pages help separate its similarly named printers. If the hotend is unfamiliar, send NZN the model name and a clear hotend photo before choosing a replacement.
Browse by confirmed nozzle format
Brass vs stainless steel vs hardened steel
The filament is the plastic on your spool. Some blends contain hard particles that wear away the nozzle. Choose the nozzle material for the exact filament you plan to use.
| Material | When it makes sense | What to allow for |
|---|---|---|
| Brass | Ordinary, non-abrasive PLA, PETG, ABS and TPU, where your printer supports the filament. | Transfers heat well and is a practical everyday choice. Abrasive fillers can wear the opening and tip. |
| Stainless steel | Non-abrasive filament where you specifically want a stainless nozzle. | Transfers heat less efficiently than brass. It is not the same as hardened steel and is not an abrasion-resistant upgrade. |
| Hardened steel | Abrasive blends, including many carbon-fibre, glass-fibre, glow and metal-filled filaments. | Resists wear, but may need a different temperature or slower flow than brass. Check the filament maker's requirements. |
Wear resistance and clog resistance are different. Filled filament may also need a wider bore, the opening at the nozzle tip. Some wood or composite blends need 0.6 mm or larger, while other formulations work with smaller sizes. Follow the recommendation on the exact spool or its maker's guide. See Prusa's composite-filament guidance.
Changing from brass to plain steel? Start with a profile for your printer, nozzle and filament. If the lines have gaps or too little plastic, check the installation and try slower printing. Prusa notes that some steel nozzles benefit from a small temperature increase. Keep any adjustment within both the filament and printer limits; it is not a required increase for every nozzle.
Which nozzle diameter should you choose?
A 0.4 mm opening is a useful everyday starting point. Smaller openings can reproduce finer horizontal details. Larger openings can lay down wider lines and thicker layers, which can shorten suitable prints. They do not guarantee a stronger part or a shorter print time.
| Opening | Useful for | What to expect |
|---|---|---|
| 0.1 mm | Specialist experimentation. | Very demanding to tune and easy to clog. Avoid this as a first nozzle change. |
| 0.2 to 0.25 mm | Small lettering, tiny features and detailed models. | Longer prints and more sensitivity to clogs. Use a supported profile and suitable filament. |
| 0.3 to 0.4 mm | General models and everyday printing. | 0.4 mm has broad profile support and balances detail with print time. |
| 0.5 to 0.6 mm | Brackets, enclosures and larger practical parts. | Can reduce the number of lines or layers needed. Small lettering and thin features may lose detail. |
| 0.8 to 1.0 mm | Large models, thick walls and vase-style prints. | The hotend must keep up with the extra plastic. You may need to reduce movement speed. |
| 1.2 to 1.5 mm | Large-format or deliberately coarse prints. | An advanced choice requiring suitable hardware and a carefully tuned profile. |
The slicer is the software that turns your model into printer instructions. After changing diameter, select a matching printer and nozzle profile, check the filament profile, and slice the model again. Update the printer's nozzle setting where available. A file prepared for a 0.4 mm nozzle does not automatically adapt to a 0.8 mm replacement.
What does flow mean? Volumetric flow is the volume of plastic extruded each second, measured in mm³/s. Wider lines and taller layers need more plastic at the same movement speed. The slicer's flow limit helps keep that demand within the hotend's melting capacity. See Prusa's flow-limit explanation.
Preparing to change a nozzle safely
Read the instructions for your exact printer and fitted hotend before starting. Traditional V6 and Volcano nozzles need a hot seal; other systems have a different procedure. There is no single temperature, tightening force or power-off sequence that suits every printer.
Before you start
- Confirm the replacement's format, opening and filament diameter.
- Have the tools specified in the manufacturer's guide ready, including the correct nozzle tool and any tool needed to support the heater block.
- Read the unloading, heating, cooling and power-disconnection steps before removing covers or touching wiring.
- Check the required tightening force. Over-tightening can damage the nozzle or heatbreak.
Keep fingers clear of hot parts. Use the specified tool to handle a nozzle in a heated block. Keep tools away from heater and temperature-sensor wires. Turning the heating setting off is not the same as disconnecting the power.
Use the instructions for your system
- Prusa MK2.5/S, MK3/S/+ and MK3.5/S nozzle replacement
- Prusa V6 nozzle guidance and MINI/+ replacement link
- Prusa Nextruder and V6-adapter instructions by model
- E3D V6 nozzle instructions and E3D Volcano nozzle instructions for genuine E3D assemblies
- Creality Ender-series instructions by exact model
After the change, update the nozzle settings and follow your printer's calibration procedure. Z offset is the adjustment that sets the nozzle's starting height relative to the bed on printers that use it. Some machines measure this automatically. Watch a small first-layer test before beginning a long print, checking that plastic flows evenly and stays attached to the bed.
Troubleshooting after the change
These are starting checks, not a diagnosis. Stop the print if plastic is leaking around the hotend or the nozzle is scraping the bed.
| Symptom | What to check first |
|---|---|
| Plastic leaks around the heater block. | A wrong part or incomplete seal is possible. Follow the exact hotend guide to inspect and correct the installation; do not keep printing over the leak. |
| Thin lines or gaps after fitting steel. | Check the profile and installation. Try a lower speed or flow limit; adjust temperature only within the permitted range. A partial clog or feeding issue can look similar. |
| A small nozzle repeatedly clogs. | Check the filament's minimum nozzle size and look for contamination. Use the manufacturer's cleaning procedure or a suitable wider opening. |
| Gaps appear after switching to wider lines or taller layers. | The requested flow may be too high. Select the correct profile and reduce the flow limit or speed. If it continues, check feeding and blockage. |
| The first layer is too high or too squashed. | Run the printer's recommended first-layer or calibration check. Adjust Z offset only if your printer's procedure calls for it. |
| Thin features or dimensions look wrong. | Check the nozzle profile and slicer preview, then slice again. Some features are too small for the selected line width; other dimensional issues can need further tuning. |
For further checks, see Prusa's under-extrusion guide. Under-extrusion means less plastic comes out than the print needs. A matte finish by itself does not establish that anything is wrong.
Explore NZN's nozzle range
Match the format before choosing a size or material. Each product page has the current sizes, price and availability.
MK8 Brass NozzleView options
MK8 Hardened SteelView options
V6-compatible BrassView options
V6-compatible Stainless SteelView options
V6-compatible Hardened SteelView options
Volcano-compatible BrassView options
Volcano-compatible Stainless SteelView options
Volcano-compatible Hardened SteelView options
Technical references
Checked on 6 September 2026 using the manufacturer instructions linked above, Prusa's nozzle-diameter comparison and E3D's nozzle-material information. Printer revisions and upgrades can change compatibility. Use the instructions for the parts actually fitted to your printer.
Choose a nozzle that fits your next print
Confirm the format, check the filament's requirements, then choose an opening supported by your printer and slicer.
