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Home3D printingPartsHardened Steel Extruder Gear Assembly - A1 Series

Drawing of an extruder gear

A part made by Bambu Lab

Hardened Steel Extruder Gear Assembly - A1 Series

Replacement hardened steel gear set inside the A1 series extruder unit.

Bambu Lab's page for this part

Hardened Steel Extruder Gear Assembly - A1 Series: Bambu Lab's answer for each printer we cover
PrinterAnswerVersionGet it
Bambu Lab A1Fits2 quotes from Bambu Lab, checked 11 October 2026A1 Series / Hardened SteelGet this part
Bambu Lab P1SNot listed by the maker1 quote from Bambu Lab, checked 11 October 2026A1 Series / Hardened Steel

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When to check or replace it

  • A1: Clean the extruder gear every 5 spools of PLA/PETG, every 2 spools of CF; replace the gear assembly if obviously worn. (Bambu Lab: "it is advisable to clean the extruder gear every 5 spools. When printing with carbon fiber filaments, clean the extruder gear every 2 spools.", source)

Versions 1

Sold by material. Bambu Lab doesn't show a part number for this part on its pages.

VersionDetailsMaker part number
A1 Series / Hardened SteelGear material: Hardened SteelNot confirmed yet

The evidence, printer by printer

A1

On the Bambu Lab A1

Fits The maker's own words

2 quotes from Bambu Lab, checked 11 October 2026. See the maker's words

  1. SRC 01 UK store product page, visible text

    Bambu Lab's page lists it for these printers:

    Compatibility A1 Series Material Hardened Steel

  2. SRC 02 UK store product page, visible text

    If abrasion or clogging occurs due to extended use, users can simply replace the extruder gear assembly rather than the whole extruder unit.
P1S

On the Bambu Lab P1S

Not listed by the maker

Bambu doesn't list this part for the P1S. That means Bambu doesn't say either way, not that it won't fit.

1 quote from Bambu Lab, checked 11 October 2026. See the maker's words

  1. SRC 01 UK store product page, visible text

    Bambu Lab's page lists it for these printers:

    Compatibility A1 Series Material Hardened Steel

Other extruder parts

Extruder3

Every part, by kind

We haven't physically tested this part. Every answer above quotes Bambu Lab's own pages, checked on 11 October 2026. For every Bambu Lab printer on one page, see the Bambu Lab printers page. Spotted a mistake? Report a mistake.