[Sticky] What is the name of this printer part and how can I replace it?
What is the name of this part on which the idler wheel is attached? I broke it when I tried to adjust it. Can I replace this to do? If so, where can you order?
@aleksey-abd This is the extruder kit. You need to replace them together. The metal extruder is much better than the plastic. https://www.creality3dofficial.com/collections/head-extruder/products/creality-mk8-extruder-1
The broken piece is the (plastic) extruder arm that holds the filament transportation wheel (steel).
You can buy this as single replacement piece, buy the whole extruder kit or (much better) buy a metal extruder kit, which is nearly the same price and much much better.
This is a gear for the extruder assembly. You can't buy it separately. However, the full assembly is pretty cheap on AliExpress. About $4.00.
You can buy it also from Amazon for $12.00. It's your choice. Search there for "Dual Gear Extruder Upgrade for Ender 3"