3D Printer Hot End Kit 0.4mm Nozzle, 12V 40W Heater, NTC Sensor
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Prices updated: 13 Oct 2026
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About this product
Hot end kit for 3D printers with an aluminum heating block, 0.4 mm nozzle, a 12 V 40 W heater and an NTC thermistor. The white wire is the thermistor and the red wire is the heater, with 1 m of cable. The listing gives an operating range of -40 °C to +260 °C and describes it as an MK8-type extruder hot end kit.
Specifications
- Nozzle diameter
- 0.4 mm
- Heater
- 12 V, 40 W
- Temperature sensor
- NTC thermistor
- Heating block size
- 20 x 20 x 10 mm
- Operating temperature
- -40 °C to +260 °C
- Cable length
- 1 m
- Materials
- Aluminum, stainless steel, brass
Frequently asked questions
How do I wire the heater and thermistor?
Connect the white thermistor wire and the red heater wire to the matching thermistor and heater terminals on your printer's control board. The heater is rated 12 V, so make sure your heater output and power supply match.
Is this kit compatible with my printer?
Check that your printer uses an MK8-type extruder, a 0.4 mm nozzle size, a 12 V heater and an NTC thermistor. Mismatched heater voltage or sensor type will prevent correct temperature control.
