Two original axles have broken. I suspect the force during cornering was too great.

Anyway, here is a replacement axle. It works perfectly.
Depending on the printer, it may be necessary to adjust the diameters. Especially with the wheels, these should fit quite well.

i printed it quite flat - see one of the photos.

Creality

Ender 5

Doesn't Matter

Yes

Depending on the printer, it may be necessary to adjust the diameters.
Especially with the wheels, these should fit quite well.

I printed it quite flat, with the flat sides on the side - see one of the photos.

You have to scrape of the remains of the support - then the parts f Codix will fit fine.