This is a Z axis stepper motor mount, designed for the Sovol SV01. This is much more structurally sound than the stock mount, and it's adjustable (no need for any shimming).

I used digital calipers to make everything as lined up as possible, then tightened everything down (including the lead screw nut).

Creality

Ender 3 Pro

No

Yes

0.2

15

Orient the part so the small part that's sticking out that attaches the mount to the vertical aluminum extrusion is flat against the bed, and print with minimal support to support the taper that has the hole for the t-nut/bolt.

Mirror along the Y axis in your slicer to get the mount for the other Z axis stepper.

Note: you will have to shorten the screws that screw into the stepper motor (or you could design and print some 9mm long washers if you don't want to).

I think this will work on the Ender 3 as well, since the Sovol SV01 is based on the Ender 3 and it looks identical, but I can't say for sure because I haven't tried it. If you plan on trying it, just make sure the mount is mirrored the correct way in your slicer to fit the side that has the lead screw if you only have 1 lead screw/Z axis stepper.