# Hotend nozzle assembly 0.4 mm for Elegoo Neptune 4 / Neptune 4 Pro 3D printers

**URL:** https://aio.lv/en/product--elegoo-elg-26879--12397484
**Data updated:** 2026-04-27 22:30 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Elegoo
**Manufacturer code:** ELG-26879
**EAN:** 6976021763986
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.99 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 16.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--elegoo-elg-26879--12397484

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

Replacement hotend nozzle assembly for Elegoo Neptune 4 and Neptune 4 Pro 3D printers with a 0.4 mm nozzle diameter. Designed for extrusion of standard filaments, this hotend provides the core melting and deposition interface for precise layer formation. Use it for maintenance, part replacement or to restore print quality on compatible Neptune 4 series machines.

## Long description

Replacement hotend nozzle assembly 0.4 mm for Elegoo Neptune 4 / Neptune 4 Pro 3D printers is a direct-fit component designed to restore or maintain the filament melting and extrusion interface on compatible Neptune 4 series machines. The assembly includes a 0.4 mm nozzle diameter optimized for standard PLA, PETG and ABS-type filaments and is intended as a service or spare part to recover print precision and stability after wear or clogging of the original hotend.
Advantages
The hotend nozzle assembly provides a straightforward replacement path that preserves the original nozzle diameter and extrusion characteristics of the Neptune 4 and Neptune 4 Pro. It is manufactured to match the geometry and thermal contact points of the original part, enabling predictable heat transfer, consistent filament flow and repeatable layer deposition. Using a matching assembly reduces downtime during maintenance and helps maintain original print tolerances when correctly installed and calibrated.
Suitable for
 Repairing or replacing a worn, damaged or clogged hotend on Elegoo Neptune 4 and Neptune 4 Pro printers
 Routine maintenance to restore consistent extrusion and dimensional accuracy
 Users needing a 0.4 mm nozzle diameter for standard-resolution prints and general-purpose filament printing
When it may not be suitable
This assembly is intended for Neptune 4 series printers and may not be compatible with other models or brands due to differences in mounting, thread types or heat block geometry. It is not a specialized high-flow, hardened-steel or micron-sized nozzle variant; therefore it may not meet requirements for printing abrasive materials, extremely high-temperature filaments, or ultra-fine-detail work below the 0.4 mm nozzle size.
Key specifications
 Nozzle diameter: 0.4 mm
 Compatibility: Elegoo Neptune 4 and Neptune 4 Pro series (direct-fit hotend assembly)
 Intended filament types: standard thermoplastic filaments such as PLA, PETG, ABS
 Function: complete hotend nozzle assembly for melting and extrusion
How to use
Power down and cool the printer before removing the existing hotend assembly. Follow the manufacturer’s service instructions for unmounting the old hotend, taking care to disconnect wiring and heater/thermistor components as applicable. Install the replacement assembly in the same orientation, secure all fasteners and reconnect electrical and cooling elements. After installation, level the build plate, re-slice a calibration model and run a test print at recommended temperatures for your filament. Check for proper extrusion, absence of leaks at the heat break and stable temperature readings before resuming normal prints.
What to consider before purchase
 Ensure your printer is an Elegoo Neptune 4 or Neptune 4 Pro and that the assembly matches your machine’s mounting and connector style
 Confirm you intend to print standard filaments; this assembly is not specified for abrasive or very high-temperature filaments
 Be prepared to follow safe procedures for hotend replacement, including powering down, cooling parts and verifying electrical connections
Usage recommendations
For best results, use filament known to print well on your Neptune 4 series and perform a PID tune if your printer shows temperature instability after replacement. Regularly clean and inspect the nozzle to prevent clogs, and keep spare nozzles or assemblies on hand to minimize downtime during maintenance.

## FAQ

### How much does the Elegoo Hotend 0.4 mm for Neptune 4 / 4 Pro cost, and is it available for purchase?

The price is 19.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Elegoo products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Elegoo service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12397484/68680888_large.webp