Porsche 944 Washer Bottle Drain Plug Cap

Porsche 944 later style washer bottle bottom drain plug/cap.

For the later style washer bottles with the threaded cap.

I found printing with 0.1mm layer heights created a better quality thread.

I've printed the cap in PLA, but perhaps PETG or ABS or some other material that is more conducive to an engine bay would be ideal.

For a proper sealed cap, use an o-ring or some sort of thread sealant or adhesive to make the cap water tight.