Bambu Extruder Filament Sensor — H2S (FAC142)

Official Filament Detection Sensor • Reliable Material Monitoring • Genuine Bambu Lab Replacement

Overview

The Bambu Extruder Filament Sensor (FAC142) is the official replacement filament detection sensor for the Bambu Lab H2S. Installed within the extruder assembly, it continuously monitors filament presence to support reliable loading, unloading, runout detection, and print recovery.

If your printer is experiencing filament detection errors, false runout messages, or loading issues, replacing the filament sensor can help restore dependable operation.

Why replace the Filament Sensor?

• Restores accurate filament detection
• Supports reliable automatic loading and unloading
• Helps prevent false filament runout warnings
• Maintains dependable print recovery after filament changes
• Genuine Bambu Lab replacement for factory fit and performance

Key features

• OEM Bambu Lab replacement part
• Designed specifically for the H2S extruder assembly
• Monitors filament presence during printing and loading
• Supports automatic printer functions and filament management
• Built to original factory specifications

Compatibility

• Bambu Lab H2S & H2S Laser

Please verify your printer model before ordering.

Common signs of a faulty sensor

• Printer reports filament runout when filament is present
• Filament fails to load or unload correctly
• Intermittent filament detection errors
• Print pauses unexpectedly due to false runout detection
• Sensor damage caused by wear or debris

What's in the box

• Bambu Extruder Filament Sensor (FAC142) ×1

Installation & maintenance

• Power off the printer before installation
• Follow the official Bambu Lab replacement procedure
• Inspect the extruder for broken filament pieces before installing the new sensor
• Verify proper filament detection after installation by performing a load/unload test

Local advantages (Convoy-Westcan, Winnipeg)

• Same-day or next-business-day dispatch when in stock
• Winnipeg: free local courier on eligible filament and accessory orders over $60
• In-store pickup available with knowledgeable local support

Policy snapshot

Replacement parts and electronic components are final sale once installed. Approved returns must be new and unopened; restocking fees and non-refundable shipping may apply.