--- product_id: 497812313 title: "Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle" price: "$75.41" currency: USD in_stock: true reviews_count: 10 url: https://www.desertcart.us/products/497812313-prus-i3-hotend-mk3s-j-head-extruder-kit-24v-40w store_origin: US region: United States of America --- # High-temp compatibility CNC precision Easy assembly Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle **Price:** $75.41 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your 3D Printing Game! ## Quick Answers - **What is this?** Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - **How much does it cost?** $75.41 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/497812313-prus-i3-hotend-mk3s-j-head-extruder-kit-24v-40w) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Engineering:** CNC-crafted for optimal thermal conductivity and performance. - • **DIY Enthusiast's Dream:** Semi-assembled for quick setup and customization. - • **Unleash Your Creativity:** Transform your 3D printing experience with high-quality components! - • **Versatile Compatibility:** Fits Prus i3 MK3 series and E3 V6 printers seamlessly. - • **High-Temperature Mastery:** Compatible with a wide range of high-temp filaments. ## Overview The FYSETC Prus i3 Hotend MK3S+ J-Head Extruder Kit is a high-performance upgrade for your 3D printer, designed for compatibility with Prus i3 MK3/MK3S/MK3S+ and E3 V6 models. This semi-assembled kit features a durable copper-titanium alloy throat, a precision CNC heating block, and a high-quality brass nozzle, ensuring exceptional thermal conductivity and high-temperature filament printing. With easy installation and a complete set of components, it's perfect for DIY enthusiasts looking to enhance their printing capabilities. ## Description This is a 24V HotEnd full kit and is intended for function with a Prus i3 MK3/MK3S/MK3S+ or other machine with E3-D V6 remote extrusion head. It's semi-assembled, please complete it by yourself. Do not use this HotEnd with 12V Prus MK2, MK2.5 or MK2S as this may damage your printer. Full Kit Includes 1 - V6 HeatSink 1.75 mm 1 - Copper-titaniium alloy all-metal throat 1 - Stainless steel HeatBreak/throat 1 - V6 aluminum HeaterBlock 1 - Brass nozzle (1.75mm x 0.4mm) 1 - 40W, 24V heater cartridge 1 - 104nt thermistor cartridge 1 - PTFE tube 1 - Black silicon cover Notice: Small parts, keep away from children. Review: Good fit, works great. - Works great, good heating and fit my printer exactly. Review: Great replacement hotend for my MK3S+ - I bought this hotend to replace the stock hotend in my Prusa MK3S+ after a heating element wire broke. After reading other reviews, I was worried that the heatsink would not fit, or that the cable connectors wouldn't match. Fortunately this proved to be a non-issue; I had the hotend installed within 30 minutes with no issues. After running PID calibration, thermal calibration, and adjusting Z-height, I was producing great-looking PETG prints that would have been challenging with the stock hotend. The silicone sock is a great addition, keeping the hotend cleaner and better insulated. I'd absolutely recommend this hotend and might purchase a second as a backup. ## Features - Fits: A necessary hotend replacement or 3D printer accessory for DIY Prus i3 MK3/MK3S/MK3S+ model or other machines with E3 V6 Remote Extruder. Not fit for Mk2(MK2 uses 12V) - Easy to install: comes with a full set, and semi-assembled, need you to complete the assembly then a Drop in All Metal Conversion Kit for your printer. Note: After installing, Heat the printhead to about 150 degrees/302℉, then tighten the nozzle with a wrench to avoid 3d printing material oozing. 0.2mm distance between 0.4 brass nozzle and heater block will be OK - Kit includes: A semi-assembled part( V6 All metal heatsink+ Bimetal Throat+ High quality brass nozzle+ Aluminum V6 Heater Block) x high temperature protective silicone cover x 24V 40W cartridge heater x specific 104NT thermistor x extra V6 stainless steel throat. The silicone sock's color is random, maybe yellow or blue - Upgrade Heater Thermistor: 24v 40W cartridge Heater is made of 304 stainless steel material,Diameter: 6mm; Length:15mm, Conveniently pre-wired with 1 meter long high temperature resistant wire; specific 104nt thermistor with cable 1meter long, Much more Accurate and Stable than the original. Temperature measurement head cylinder diameter 3mm, length 12mm, can be used with the heating block that support the thermocouple - High Quality: Semi-assembled hotend adopts copper- titanum alloy all-metal throat, can be applied to high temperature filament printing; the quality CNC heating block with good thermal conductivity and high precision ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 3.8 out of 5 stars 70 Reviews | ## Images ![Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - Image 1](https://m.media-amazon.com/images/I/615SGvR+IYL.jpg) ![Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - Image 2](https://m.media-amazon.com/images/I/61qBX0U0MjL.jpg) ![Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - Image 3](https://m.media-amazon.com/images/I/611jNTKDiXL.jpg) ![Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - Image 4](https://m.media-amazon.com/images/I/61Ie-3yAjwL.jpg) ![Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - Image 5](https://m.media-amazon.com/images/I/71jf6kCGGFL.jpg) ## Questions & Answers **Q: Prusa3d sells 3 different hotends. different for mk3, mk3s, and mk3s+ due to different ptfe tubes...(?). are instructions/parts sufficient for each?** A: As far as I know the difference between the Mk3 / Mk3S and Mk3S+ hotends had to do with the inner diameters of the PTFE tubes. If I recall correctly, the 3 and 3S had a 1.8mm inner diameter, but the MMU2 and MMU2S required a smaller 1.75mm diameter to help avoid large ball-ends jamming in the MMU2's bowden when loading and unloading. The smaller 1.75mm diameter was probably standardized in the 3S+ and upgrade kits to simplify supply and future conversions. As far as I know if you're not using a MMU2/MMU2S a PTFE tube with either inner diameter will work, but if you want to use a MMU2 or something like it an inner diameter of 1.75mm is advisable. There may be other differences I'm not aware of, but generally the v6 hotends are the same. Now if you're asking if this hotend would work in any Mk3 model, I'm fairly confident it will. The supplied PTFE tube is also of the smaller ID, some you can probably use it with a MMU2 as well. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good fit, works great. *by W***N on October 15, 2025* Works great, good heating and fit my printer exactly. ### ⭐⭐⭐⭐⭐ Great replacement hotend for my MK3S+ *by S***R on December 31, 2024* I bought this hotend to replace the stock hotend in my Prusa MK3S+ after a heating element wire broke. After reading other reviews, I was worried that the heatsink would not fit, or that the cable connectors wouldn't match. Fortunately this proved to be a non-issue; I had the hotend installed within 30 minutes with no issues. After running PID calibration, thermal calibration, and adjusting Z-height, I was producing great-looking PETG prints that would have been challenging with the stock hotend. The silicone sock is a great addition, keeping the hotend cleaner and better insulated. I'd absolutely recommend this hotend and might purchase a second as a backup. ### ⭐ Trade-off: value for money vs peace of mind *by P***D on December 15, 2025* This has been of a letdown. The silicon sock provided doesn't fit properly or otherwise comes loose and the thermistor does not fit the heat block correctly. It can't be locked down by the bolt that closes the gap in the heatblock. This means the silicon sock can pull the thermistor out of the heat block, killing a job and creating a thermal anomaly. Fitting it was easy. The PTFE tube needed to be trimmed to fit. Seems like it could be sized more accurately but I'd rather have too much than too little. This is a repeat purchase, initially as a spare, but the previous one had to be replaced when it jammed which makes me wonder if this one is going to have the same problem. All in all, decent value but maybe not as much peace of mind as I would like. Not convinced I'll order another as a replacement. EDIT: I have to knock this down to 1 star as it failed on me about months after buying it. It jammed in such a way I had to throw the whole thing out, with the cables. I could salvage nothing. Looking back at my orders, this isn't the first time. I don't think hot-ends are supposed to be consumables. ## Frequently Bought Together - FYSETC Prus i3 Hotend MK3S+ J-Head Extruder Kit 24V 40W for 1.75mm Direct Filament Compatible with Prus i3 MK3/MK3S/MK3S+ and Other E3 V6 Remote Printhead Printer with Silicon Cover and 0.4mm Nozzle - OVERTURE PLA Filament 1.75mm with 3D Build Surface 200mm x 200mm 3D Printer Consumables, 1kg Spool (2.2lbs), Dimensional Accuracy +/- 0.05 mm, Fit Most FDM Printer, 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.us/products/497812313-prus-i3-hotend-mk3s-j-head-extruder-kit-24v-40w](https://www.desertcart.us/products/497812313-prus-i3-hotend-mk3s-j-head-extruder-kit-24v-40w) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-15*