The feet of the heating radiator could not stand us sitting on it anymore to warm up on very cold days and broke. Afterwards, since the radiator did not stand upright and we could not move it easily, we had to find a new one to replace the broken feet. Instead of searching for spare parts on the internet, I designed a part similar to the broken part and produced it on a 3D printer. I removed the good wheel and replaced it with the new plastic part, and it was as solid as before.
Since it will be mounted on a heater, printing with ABS or PET-G will last longer. I used PET-G filament and it hasn't caused any problems so far. I recommend printing it turning sideways and use high infill to increase durability.
The author marked this model as their own original creation.