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Three small brass hotend assemblies with hardened steel nozzles, a white silicone sock and two silicone brushes

SAHVAIM PH-K444-A1M-1S-2GJSmix-Y 3 Pack Hotend Kit 0.4mm Hardened Steel Nozzle machine shop hardware

SKU CH-C748-FNGYD MPN PH-K444-A1M-1S-2GJSmix-Y

Three 0.4 mm hardened-steel hotends rated to 350 °C with silicone sock and cleaning brushes for Bambu Lab A1, A1 Mini and A2L printers

  • MaterialWear-Resistant High-Precision Leak-Proof, Heat-Resistant up
  • Selling Unit1
  • Item Count12 pack
  • Compatibility/FitmentPH-K444-A1M-1S-2GJSmix-Y
  • Precise extrusion for stable prints with Bambu Lab A1/A1 Mini/A2L
  • Hardened steel nozzle lasts 510 times longer than brass for abrasive filaments
  • Leak-proof seal prevents oozing during multi-hour print jobs
  • Operates up to 350 °C for ABS, ASA, PETG, Nylon and PC
  • Plug-and-play kit includes 3 hotends, silicone sock and cleaning brushes

3-Pack Hardened Steel Hotend Kit for Bambu Lab

This kit supplies three 0.4 mm hardened steel hotend assemblies rated to 350 °C. It is built for owners of Bambu Lab A1, A1 Mini or A2L printers who print abrasive or engineering-grade filaments such as ABS, ASA, PETG, PA Nylon or PC. The leak-proof threads and flat sealing surface prevent oozing during multi-hour prints. Silicone socks and dedicated nozzle wipers are included for heat protection and quick cleaning.

Upgrade from standard brass nozzles when printing

Hardened steel lasts up to 510 times longer than brass, so the swap pays off once you move beyond plain PLA. The plug-and-play design needs no tools or firmware changes, making it a practical step up for shops that run carbon-fibre, glass-fibre or metal-filled spools regularly. If your workload stays with non-abrasive PLA, the extra wear resistance brings no measurable benefit.

Limited to 0.4 mm bore and Bambu Lab A1-series mount

The fixed 0.4 mm orifice cannot be changed without buying a different kit, so variable layer-width workflows are not supported. The proprietary hotend interface fits only A1, A1 Mini and A2L printers; it will not mount on other brands or on earlier Bambu models. Maximum temperature is capped at 350 °C, ruling out ultra-high-temperature polymers that require higher sustained heat.

Highlights

  • Precise extrusion for stable prints with Bambu Lab A1/A1 Mini/A2L
  • Hardened steel nozzle lasts 510 times longer than brass for abrasive filaments
  • Leak-proof seal prevents oozing during multi-hour print jobs
  • Operates up to 350 °C for ABS, ASA, PETG, Nylon and PC
  • Plug-and-play kit includes 3 hotends, silicone sock and cleaning brushes

Specifications

BrandSAHVAIM
ModelPH-K444-A1M-1S-2GJSmix-Y
MaterialWear-Resistant High-Precision Leak-Proof, Heat-Resistant up to 350? with Silicone Socks & A1/A1 Mini Nozzle Wipers
Selling Unit1
Item Count12 pack
Compatibility/FitmentPH-K444-A1M-1S-2GJSmix-Y
Part NumberPH-K444-A1M-1S-2GJSmix-Y

Questions about this item

Does the 0.4mm hardened steel nozzle thread directly into the Bambu Lab A1 hotend without an adapter?

Yes, each of the three hotend assemblies is a plug-and-play replacement for the Bambu Lab A1, A1 Mini and A2L printers and requires no adapter or modification.

Which way does the heat-insulating silicone sock orient when sliding it over the heater block?

Slide the sock over the block with the open end facing the nozzle tip so it covers the heater cartridge and thermistor leads; the sock is a single universal size included in the kit.

When should the large silicone brush be swapped for the small one during routine cleaning?

Use the large brush for the A1 and A2L nozzles and the small brush for the A1 Mini nozzle; replace either brush when the bristles no longer remove residue effectively.

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