---
product_id: 776850773
title: "Upgrade Kobra S1 Ceramic Hotend,0.4mm Hardened Steel Nozzle+Heating Block Integrated Structure Hot End Replacement with Silicone Sock Compatible with Anycubic Kobra S1/S1 Combo 3D Printers"
brand: "unitak3d"
price: "¥5004"
currency: JPY
in_stock: true
reviews_count: 13
category: "Uni Tak3 D"
url: https://www.desertcart.jp/products/776850773-upgrade-kobra-s1-ceramic-hotend-0-4mm-hardened-steel-nozzle
store_origin: JP
region: Japan
---

# 0.02mm nozzle precision 30% faster heat-up Integrated heatbreak+block Upgrade Kobra S1 Ceramic Hotend,0.4mm Hardened Steel Nozzle+Heating Block Integrated Structure Hot End Replacement with Silicone Sock Compatible with Anycubic Kobra S1/S1 Combo 3D Printers

**Brand:** unitak3d
**Price:** ¥5004
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your 3D printing game with precision and speed!

## Quick Answers

- **What is this?** Upgrade Kobra S1 Ceramic Hotend,0.4mm Hardened Steel Nozzle+Heating Block Integrated Structure Hot End Replacement with Silicone Sock Compatible with Anycubic Kobra S1/S1 Combo 3D Printers by unitak3d
- **How much does it cost?** ¥5004 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/776850773-upgrade-kobra-s1-ceramic-hotend-0-4mm-hardened-steel-nozzle)

## Best For

- unitak3d enthusiasts

## Why This Product

- Trusted unitak3d brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Thermal Response:** Cuts preheat time by 30%, so you print faster and stress less.
- • **Universal Compatibility:** Seamlessly fits Anycubic Kobra S1 & S1 Combo, supporting PLA, ABS, PETG, TPU & more.
- • **Plug & Play Installation:** Pre-installed heating element and nozzle make upgrades effortless—get back to printing in minutes.
- • **Precision Hardened Steel Nozzle:** 0.4mm nozzle with ultra-tight 0.02mm tolerance for flawless, detailed prints every time.
- • **Integrated Heatbreak & Heating Block:** Engineered for stability and zero filament leaks—print with confidence.

## Overview

The Upgrade Kobra S1 Ceramic Hotend features an integrated heatbreak and heating block design that boosts thermal conductivity by 30%, reducing preheat times significantly. Its 0.4mm hardened steel nozzle offers exceptional precision with a diameter tolerance under 0.02mm, ensuring high-quality extrusion. Compatible with Anycubic Kobra S1 and S1 Combo printers, it supports a wide range of filaments including PLA, ABS, PETG, and TPU. Pre-installed components simplify installation, making it a reliable OEM replacement that revitalizes your 3D printing experience.

## Description

desertcart.com: Upgrade Kobra S1 Ceramic Hotend,0.4mm Hardened Steel Nozzle+Heating Block Integrated Structure Hot End Replacement with Silicone Sock Compatible with Anycubic Kobra S1/S1 Combo 3D Printers : Industrial & Scientific

Review: Perfect Replacement — Works Like New! - This hotend fit my Kobra 3 perfectly and brought my printer back to life. Installation was straightforward, and it heated up quickly with accurate temperature control. Print quality is excellent again — smooth extrusion, no clogs, and consistent results. Highly recommend for anyone needing a reliable OEM replacement part. Great value and performance!
Review: Product comparable with latest firmware version 2.6.0 100% - Worked great!! Fit perfect Solved my clogging issue instantly. I wasn’t able to print ANYTHING before this product. Heats up super fast and cut my prep time down by more than half. fast overnight delivery at a amazing price! So happy i can finally print

## Features

- 【Integrated Structure】The integrated construction of the heatbreak and heating block makes the internal structure more stable, reducing filament leakage and detachment
- 【High Temperature Resistance】This kobra s1 hotend is made of brass heatbreak and aluminum alloy heating block, which is excellent in high temperature stability, and the thermal conductivity is improved by 30% compared with standard hotend, greatly reducing the preheating waiting time and enhancing printing efficiency
- 【High precision】 The 0.4mm nozzle is made of high-quality hardened steel with no burrs and a diameter tolerance under 0.02 mm for accurate extrusion, and improving printing quality
- 【Compatibility】This upgraded ceramic hotend is compatible with the Anycubic Kobra S1 and Kobra S1 Combo 3D printers. It supports the printing of PLA, ABS, PETG, TPU, and other filaments, meeting various printing needs
- 【Installation Precautions】Simply swap out your old hotend—heating element, thermistor, and nozzle are pre-installed. Before installation, check for loose parts caused by transit; after fitting, perform a quick nozzle PID calibration to ensure perfect prints

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FCY8HRGW |
| Best Sellers Rank | #5,961 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #86 in 3D Printer Accessories |
| Date First Available | June 12, 2025 |
| Item Weight | 1.41 ounces |
| Manufacturer | UniTak3D |
| Package Dimensions | 3.94 x 2.64 x 1.34 inches |

## Images

![Upgrade Kobra S1 Ceramic Hotend,0.4mm Hardened Steel Nozzle+Heating Block Integrated Structure Hot End Replacement with Silicone Sock Compatible with Anycubic Kobra S1/S1 Combo 3D Printers - Image 1](https://m.media-amazon.com/images/I/51HAwpJRe1L.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Replacement — Works Like New!
*by L***S on November 11, 2025*

This hotend fit my Kobra 3 perfectly and brought my printer back to life. Installation was straightforward, and it heated up quickly with accurate temperature control. Print quality is excellent again — smooth extrusion, no clogs, and consistent results. Highly recommend for anyone needing a reliable OEM replacement part. Great value and performance!

### ⭐⭐⭐⭐⭐ Product comparable with latest firmware version 2.6.0 100%
*by R***A on January 11, 2026*

Worked great!! Fit perfect Solved my clogging issue instantly. I wasn’t able to print ANYTHING before this product. Heats up super fast and cut my prep time down by more than half. fast overnight delivery at a amazing price! So happy i can finally print

### ⭐ Nowhere close to "original". Ruined my $35 cool plate...
*by K***D on July 9, 2025*

I removed the old hotend per the instructions on Anycubic's website. The install for this was easy and it seemed to match the dimensions and look of the original with no visible differences, at first. Once I installed it, I did a PID calibration on the printer as recommended by the manufacturer and fired up my first test print of a temp tower. After the first initial layer, the nozzle immediately began to glob out filament and make a huge mess of the next couple of layers until I manually stopped the print. I took it apart and removed the hotend and cleaned a ton of filament that was jammed in the nozzle. I reinstalled the hotend but what I didn't notice at the time is that the PTFE guide tube that had pushed itself out of the neck about 2mm. When I went to reinstall it, I did just as the first time and pushed up until it was flush and locked the lever back in position. It seemed to have tension when pulling down so I put things back together and fired up a second print. Same thing, temp tower. This time, it laid down the first layer nearly perfectly so I walked out the room. As I was walking away, I heard a loud grinding noise so I ran back in to see what was going on. The gap in the PTFE tube caused the neck to not sit flush and it was not fully locked in position so it had dropped down after the first layer and been dragged along my $35 build plate and dug huge holes and trails in it. I stopped the print, heated up the print head and removed it again and as I pulled it out of the print head, this time the PTFE guide tube fell completely out of the hotend and onto the floor along with a small piece of filament that was left inside. Now not only am I out a functional hotend but I lost a $35 build plate. I try not to leave bad reviews unless I have to and the second install was a bit of user error as I should have noticed, at the point, that the PTFE guide tube was not properly glued into the unit like the factory ones are but it certainly shouldn't fall out.

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**Shop now:** [https://www.desertcart.jp/products/776850773-upgrade-kobra-s1-ceramic-hotend-0-4mm-hardened-steel-nozzle](https://www.desertcart.jp/products/776850773-upgrade-kobra-s1-ceramic-hotend-0-4mm-hardened-steel-nozzle)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*