Yes you can just buy new splash guards at the hardware store..

Stl should load in the ideal print orientation and requires no support. You may have to adjust the thickness or of the flaps to get the ideal stiffness/flex needed. My first go was too thick and stiff to work well. Obviously depends on your TPU.

I have been using my 3d printed splash guard since 2020.

Pictures show old part vs new 3d printed replacement.