Kohler Sterling Part Number 1080397 - Shower Door Front Bushing

This replaces Sterling part number Replacement part number 1080397, Front Bushing, which allows the door to slide on the track without metal-on-metal friction.  The OEM part comes with a piece of foam for the top of the bushing to prevent it from sliding (see photos). You could achieve the same outcome by just rolling up a small piece of tape, so the sticky side is facing out.

The most important printing tip is to put the seam at the end of either leg, rather than in a corner, so the seam doesn't create a weak spot.  If you can put your seams in the back, the STL file is already oriented with the legs facing towards the back.  The one in the photos is printed with white Bambu PETG at .16mm layer height, 50mm speed, and I put a small outer brim since there is very little surface area contacting the plate.