Bambu Hotend 0.4mm Hardened Steel Nozzle for A1/A1/Mini/A2L

Bambu Lab Hotend 0.4mm with Hardened Steel Nozzle is a genuine replacement hotend designed for Bambu Lab A1, A1 Mini and A2L 3D printers. Its wear-resistant hardened steel nozzle offers a balance between printing detail and speed, while the quick-swap design simplifies hotend replacement.

⭐ Bambu Lab FAH019 combines a wear-resistant 0.4mm hardened steel nozzle with a convenient quick-swap mounting design for compatible A1 and A2L printers.

✅ Compatible Bambu Lab 3D printers:

✅ A1 ✅ A1 Mini ✅ A2L

🔹 Not designed for P1, X1, H2 or P2S printers, which use different hotend designs.

📦 Product Information

🔹 Brand: Bambu Lab.

🔹 Product: Hotend with Hardened Steel Nozzle.

🔹 Manufacturer Part Number: FAH019.

🔹 Component Type: Hotend with integrated nozzle.

🔹 Nozzle Material: Hardened Steel.

🔹 Nozzle Diameter: 0.4mm.

🔹 Filament Diameter: 1.75mm.

🔹 Compatible Printers: A1, A1 Mini, A2L.

🔹 Quantity: One unit.

⭐ Why Choose Bambu Lab Hotend FAH019?

🔹 Hardened steel provides better wear resistance than stainless steel when printing abrasive materials.

🔹 The 0.4mm nozzle offers balanced detail and printing speed.

🔹 Genuine Bambu Lab construction designed for the A1 series mounting system.

🔹 Quick-swap installation without disconnecting heater or thermistor wiring when replacing the hotend itself.

🔹 Supports PLA, PETG and other printer-compatible filaments when appropriate printing settings are used.

⚙️ Operating Specifications

🔹 Nozzle Diameter: 0.4mm.

🔹 Nozzle Material: Hardened Steel.

🔹 Published Hotend Maximum Temperature: 320°C.

🔹 Maximum Operating Temperature of the listed compatible printers: 300°C.

🔹 Actual printing temperatures and speeds depend on the selected filament, printer and slicing profile.

💡 Installation and Usage Recommendations

🔹 Unload filament, switch off the printer and allow the hotend to cool before replacement.

🔹 Open the toolhead cover, remove the silicone sock and release the retaining clip, following the official Bambu Lab guide.

🔹 Fully seat the new hotend and lock the retaining clip before operating the printer.

🔹 Select Hardened Steel and 0.4mm as the installed nozzle material and size in the printer settings and Bambu Studio.

🔹 A 0.4mm hardened steel nozzle is suitable for certain tested Bambu PLA-CF and PETG-CF filaments; a 0.6mm nozzle is preferable for some fiber-filled materials to reduce clogging risk.

🔹 Always follow filament-specific printing settings and the printer temperature limit.

📊 Technical Specifications

🔹 Manufacturer: Bambu Lab.

🔹 MPN: FAH019.

🔹 Product Type: Hotend with Nozzle.

🔹 Nozzle Material: Hardened Steel.

🔹 Nozzle Diameter: 0.4mm.

🔹 Hotend Length: 47.3mm.

🔹 Published Hotend Maximum Temperature: 320°C, subject to printer limits.

🔹 Filament Diameter: 1.75mm.

🔹 Mounting System: Quick Swap.

🧩 Applications

🔹 Replacing worn, damaged or clogged hotends.

🔹 Upgrading from stainless steel to a hardened steel nozzle.

🔹 Printing everyday models, functional parts and decorative objects.

🔹 Printing compatible abrasive filaments within the printer and nozzle limitations.

🛡️ Safety and Installation

🔹 Never remove a hot hotend. Power off the printer, allow all components to cool and follow the official model-specific maintenance instructions.

For technical datasheets, printing settings and CubicSky support guides, see:

🔗 3D Printing Materials Settings and Technical Support Guide

📚 Official Sources and Documents

🔹 Bambu Lab A1 Mini Toolhead Maintenance Guide

🎥 Video