--- product_id: 219158506 title: "MK8 Hot End Extruder Nozzle Kit 0.4mm for 3D Printer,Assembled Extruder Brass Kits 1.75mm,30mm A8 Throat Tubing Aluminum Heater Block for RapRep i3 Anet A2 A8 3D Printer Part Replacement" brand: "dorhea" price: "€ 15.33" currency: EUR in_stock: true reviews_count: 8 category: "Dorhea" url: https://www.desertcart.pt/products/219158506-mk8-hot-end-extruder-nozzle-kit-0-4mm-for-3d store_origin: PT region: Portugal --- # 12V/40W rapid heating 30mm stainless steel throat tube 0.4mm precision brass nozzle MK8 Hot End Extruder Nozzle Kit 0.4mm for 3D Printer,Assembled Extruder Brass Kits 1.75mm,30mm A8 Throat Tubing Aluminum Heater Block for RapRep i3 Anet A2 A8 3D Printer Part Replacement **Brand:** dorhea **Price:** € 15.33 **Availability:** ✅ In Stock ## Summary > 🔥 Upgrade your 3D printing game with precision and speed! ## Quick Answers - **What is this?** MK8 Hot End Extruder Nozzle Kit 0.4mm for 3D Printer,Assembled Extruder Brass Kits 1.75mm,30mm A8 Throat Tubing Aluminum Heater Block for RapRep i3 Anet A2 A8 3D Printer Part Replacement by dorhea - **How much does it cost?** € 15.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/219158506-mk8-hot-end-extruder-nozzle-kit-0-4mm-for-3d) ## Best For - dorhea enthusiasts ## Why This Product - Trusted dorhea brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete DIY Kit:** Includes heater block, thermistor, cartridge heater & wrench—everything you need to replace and repair. - • **Rapid Heat-Up Power:** 12V/40W heater ensures your prints start faster, cutting downtime and boosting productivity. - • **Precision Print Quality:** 0.4mm brass nozzle delivers sharp, detailed layers compatible with PLA & ABS filaments. - • **Universal Compatibility:** Fits MK8, Anet A8/A2, RepRap i3, and more—upgrade your 3D printer without hassle. - • **Durable Stainless Steel Throat:** 30mm tube reduces extrusion force and improves retraction reliability for flawless prints. ## Overview The MK8 Hot End Extruder Nozzle Kit is a comprehensive replacement set designed for 1.75mm filament 3D printers like Anet A8 and RepRap i3. Featuring a 12V/40W heater for rapid temperature ramp-up, a 0.4mm brass nozzle for detailed prints, and a 30mm stainless steel throat tube to reduce extrusion force, this kit enhances print reliability and quality. Its aluminum heater block and pre-wired thermistor ensure stable operation up to 280°C, making it an essential upgrade or repair solution for professional-grade 3D printing. ## Description Features: DIY replacement kit, special for Anet A2 & A8 printer. Pre-wired thermistor, 100K ohm, 1.1m in length. 12V 40W cartridge heater. Aluminum heater block. 0.4mm output nozzle. 6mm diameter external thread extruder throat, 30mm length, suits for 1.75mm filament. Specifications: --NTC3950 Thermistor Material: High Temperature . (200℃)Resistance: at 25°C=100K ohm Cable Length: Approx. 1.1m Working Temperature Range: -40℃～+300℃ . Extruder Throat Material: Stainless Steel Input Diameter: 1.75mm Length: 30mm External Thread Diameter: 6mm. Nozzle Material: Brass Input Diameter: 1.75mm & 3mm Output Diameter: 0.4mm . Heater Material: Stainless Steel Voltage: 12v Power: 40w . Package include : 1 X 0.4mm MK8 extruder nozzle 1 X 30mm throat tube 1 X heater block 1 X thermistor 1 X cartridge heater 1X wrench Review: 12V caution if you have 24V machine - I bought this for my ANET A8 Plus. Fits perfectly. Only one problem, my machine is 24V, not 12V. I wasn't thinking. After I installed and began to run my first test print, I noticed the end temperature jumped 10 degrees each refresh instead of the normal 2 or 3 degrees. Great, it will warm up faster I thought. Little did I think it's getting too much power. The temp soared even after the power to the ender stopped (thermal lag.) The test print started and after 15 or so minutes the machine shut down from ender heating problem. It took, me forever to realize that I put in this 12V heater when I needed a 24V heater. The DC resistance is about 4 ohms on this unit, my old on was 15 ohms. P=V^2/R. P=24*24/15 = 38W - perfect. For the 12V units, 12*12/4 = 36V - perfect. BUT, 24*24/4 = 144 W - way too much and I=V/R so the current was 24/4 or 6 Amps. Too much for the resettable onboard fuse to handle and it fried instead of doing what it should have done. It took me a long time to figure out the problem, so beware. I replaced the board fuse with an external fuse and am going to MOSFET heater control so I can easily swith from 24V or 12V depending on my heater cartridge. Without the blowing out problem - which was my fault - this was a great buy. I ordered another to have as a spare. Review: Great replacement - So, I had a near fire with the previous unit when it mucked up and balled around the hot end, but also managed to push out the heating element to the point that it caused a thermal runaway. I came downstairs just as it started to combust, purely by chance. I took the chance to replace this and do some cleaner rewiring in the split loom and more intentional cable lengths instead of ALL the cable...ever. Very pleased. ## Features - Heated Tubing :12V/40W high temperature resistance heater (wire length 1M/39.4inches), operating temperature range:0~+280°C (0~+538°F) - Nozzle: 0.4mm Extruder Brass Nozzle Print Head, Compatible with 1.75mm PLA ABS 3D printer - 30mm Length Extruder 1.75mm Tube, made from stainless steel ,compatible with 1.75mm PLA ABS 3D printer, reduces extrusion force and improve reliability of retractions thanks to the improved internal surface finish - Heater block: Aluminium Material heater block, 2cm X 2cm X 1cm, comes with a necessary M6d screw. Working perfectly with ABS and PLA filaments - You can repair your extruder with this kit instead of replacing a new one when your extruder suffers a clog that can't be fixed. A great replacement hot end for MK8, i3, E3D, Anet A8, Alunar M508, CR7, V2 etc ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0894GW1R9 | | Best Sellers Rank | #204,449 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,266 in 3D Printer Accessories | | Date First Available | May 25, 2020 | | Item Weight | 1.58 ounces | | Item model number | D13532-1 | | Manufacturer | DORHEA | | Package Dimensions | 4.9 x 3.8 x 0.2 inches | ## Images ![MK8 Hot End Extruder Nozzle Kit 0.4mm for 3D Printer,Assembled Extruder Brass Kits 1.75mm,30mm A8 Throat Tubing Aluminum Heater Block for RapRep i3 Anet A2 A8 3D Printer Part Replacement - Image 1](https://m.media-amazon.com/images/I/51yccLv76ML.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 12V caution if you have 24V machine *by S***R on December 11, 2024* I bought this for my ANET A8 Plus. Fits perfectly. Only one problem, my machine is 24V, not 12V. I wasn't thinking. After I installed and began to run my first test print, I noticed the end temperature jumped 10 degrees each refresh instead of the normal 2 or 3 degrees. Great, it will warm up faster I thought. Little did I think it's getting too much power. The temp soared even after the power to the ender stopped (thermal lag.) The test print started and after 15 or so minutes the machine shut down from ender heating problem. It took, me forever to realize that I put in this 12V heater when I needed a 24V heater. The DC resistance is about 4 ohms on this unit, my old on was 15 ohms. P=V^2/R. P=24*24/15 = 38W - perfect. For the 12V units, 12*12/4 = 36V - perfect. BUT, 24*24/4 = 144 W - way too much and I=V/R so the current was 24/4 or 6 Amps. Too much for the resettable onboard fuse to handle and it fried instead of doing what it should have done. It took me a long time to figure out the problem, so beware. I replaced the board fuse with an external fuse and am going to MOSFET heater control so I can easily swith from 24V or 12V depending on my heater cartridge. Without the blowing out problem - which was my fault - this was a great buy. I ordered another to have as a spare. ### ⭐⭐⭐⭐⭐ Great replacement *by B***N on December 28, 2025* So, I had a near fire with the previous unit when it mucked up and balled around the hot end, but also managed to push out the heating element to the point that it caused a thermal runaway. I came downstairs just as it started to combust, purely by chance. I took the chance to replace this and do some cleaner rewiring in the split loom and more intentional cable lengths instead of ALL the cable...ever. Very pleased. ### ⭐ not the solution you are looking for *by H***L on January 24, 2026* slight smoke at first heat, smelled of oil. got 10 minutes into first print, thermal runaway. restart printer, now will not heat above 40c and then throws E1 Heating failed ## Frequently Bought Together - MK8 Hot End Extruder Nozzle Kit 0.4mm for 3D Printer,Assembled Extruder Brass Kits 1.75mm,30mm A8 Throat Tubing Aluminum Heater Block for RapRep i3 Anet A2 A8 3D Printer Part Replacement - Onyehn 22pcs/Lots A8&A2 3D Printer Part Each 5PCS 0.4mm Extruder Nozzle Print Head+1.75mm Teflon Throat Tube+Heater Blocks Hotend for MK8 Makerbot Reprap - 10 Silicone 3D Printer Socks Silicone Printer Cover Heat Block Cover Compatible with Creality CR-10, MK7/8/9, S4 S5, Anet A8, Hotend Extruder (Black) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/219158506-mk8-hot-end-extruder-nozzle-kit-0-4mm-for-3d](https://www.desertcart.pt/products/219158506-mk8-hot-end-extruder-nozzle-kit-0-4mm-for-3d) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-22*