Brass Prusa Nextruder Nozzles — 0.4mm is listed in the E3D nozzle catalog. This page separates documented specifications from scoped compatibility rules, so an unlisted combination stays unverified.
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Before you rely on a result
A documented product or fit statement is only as specific as its source. Match the exact model, installed hotend, revision, and required adapter before acting.
Exact identification
Catalog ID: e3d-prusa-mk4-nozzle-as-0400. Manufacturer: E3D. Model or part number: PRUSA-MK4-NOZZLE-AS-0400.
Manufacturer-recorded specifications
Values below are only fields recorded from the linked manufacturer material. A missing value means the source set did not establish it; it does not imply zero or no limit.
| Specification | Documented value |
|---|---|
| Manufacturer SKU | PRUSA-MK4-NOZZLE-AS-0400 |
| Orifice diameter | 0.4 mm |
| Nozzle material | brass |
| Interface family | prusa-nextruder |
Physical fit before material choice
Matching orifice size does not establish thread, sealing surface, heater assembly, length, or sensor fit. The exact installed hotend and any adapter must match the scoped rule below.
Documented relationships
Showing 12 of 12 linked rules. The checker can inspect an exact pair and source. A verified rule may still require its listed conditions.
| Related item | Source status | Fit axis | Conditions and exclusions |
|---|---|---|---|
| Prusa Nextruder | VERIFIED | nozzle to hotend | Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Original Prusa MK3.9 | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Original Prusa MK3.9S | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Original Prusa MK4 | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Original Prusa MK4S | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Original Prusa XL | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Prusa CORE One | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Prusa CORE One L | CONDITIONAL | nozzle to printer | Use the exact stock interface/revision named by the manufacturer; a modified hotend may require a different nozzle.; Select and calibrate the matching nozzle diameter in the slicer.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Prusament PETG Ultraglow | NOT RECOMMENDED | filament to nozzle | The material page warns that this very abrasive material rapidly wears brass nozzles. |
| Prusa XL+ | CONDITIONAL | nozzle to printer | Use the Nextruder configuration and the correct 0.4 mm standard/high-flow profile; INDX conversion is outside this fit.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Prusa CORE One+ (Gen 2) | CONDITIONAL | nozzle to printer | Use the Nextruder configuration and the correct 0.4 mm standard/high-flow profile; INDX conversion is outside this fit.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
| Prusa CORE One L+ | CONDITIONAL | nozzle to printer | Use the Nextruder configuration and the correct 0.4 mm standard/high-flow profile; INDX conversion is outside this fit.; Excludes: INDX conversions and other unlisted aftermarket hotend changes are outside this stock-configuration fit unless expressly specified. |
Manufacturer sources
Links document the stated identity, specifications, or scoped relations. They do not represent hands-on testing by this site.
- E3D — Brass Prusa Nextruder Nozzles checked 2026-10-30; global
- Prusa Research — Prusa Nozzle brass - 0.4 mm | Original Prusa 3D printers directly from Josef Prusa checked 2026-10-30; global
- Prusament — Prusament PETG Ultraglow | Prusament checked 2026-10-30; global
- Prusa Research — Prusament PETG Ultraglow Green 800g (NFC) | Original Prusa 3D printers directly from Josef Prusa checked 2026-10-30; global
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