CHPOWERCR-10 Extruder Upgraded Replacement, Aluminum MK8 Drive Feed 3D Printer Extruders for Creality Ender 3, CR-10, CR-10S, CR-10 S4, CR-10 S5

Included hardware was wrong, the screw for the bearing was way to short. Ended up using the hardware from my old plastic extruder.

It was cheap and it works well. That's it.

Writing review after one month of installation of product. Ultimate product, working properly.

I had been getting a little under extrusion for a while. Finally, the stock plastic extruder assembly broke and I finally understood where the problem was coming from. This is an instant and insane improvement over the stock cr10 extruder assembly. The metal parts are well made, seem to be machined pretty well, the finish is great, and it was super easy to install. You could probably get this part cheaper on ebay or GearBest, but it's hard to beat Prime shipping and free no-nonsense returns. I've had this installed for a few months now and it works flawlessly for PLA, and would probably work well with flexible filaments. The only problem I have is too much tension, which creates some PLA dust towards the back from the extruder gear biting into the filament. I can probably print a part to fix that, so I'm not going to dock a star considering how cheap this part was.

I read other reviews before I purchased this, and therefore I don't think I need to go into a lot of details- It's a great product, and has improved the print quality over the stock unit quite noticeably. Installation is very simple for anyone who is at least mechanical enough to assemble the machine.The CHPOWER unit comes with a complete set of all the hardware associated with the extruder- screws, filament drive gear, filament drive bearing, guide tube fitting, etc, but I used the original items other than the metal frame and spring. This kit would work well for someone wanting to replace a damaged bearing or gear too, though, since that hardware is included.I agree with the positive reviews of this item - it's such an affordable addition that improves the print quality so much, I'm surprised Creality doesn't use something similar on the unit as stock. It not only eliminated almost all of the random voids that seemed to always keep my prints from being 100%, but it also affected the overall look of the print in a positive way. Odd as it sounds, there's a change in appearance that's tough to describe but makes them somehow more visually appealing - I could not capture the difference on camera, but the prints have a smoother look where the layers meet.