Carpokes Porsche Forum

For 8-valve 944's, attached is a simple .STL file for a plug you can print to keep debris from falling into the spark plug hole (e.g., when the plugs are removed for an extended period of time). Ninjaflex/TPU would be good, but they work just fine with any plastic. These fit just right based on my printer, but you can scale up or down a small % if needed to get the fitment right on your printer.

This should work on a 928 as well, shouldn't it?

On an 8-valve head, I'm sure it would.

My 1983 U.S. model 928S thanks you!