On Sun, 18 Mar 2018 17:33:18 -0400, Nil
wrote:

The plastic cowl that covers the front bumper of my 1998 Mercury Grand
Marquis is broken underneath and the loose ends are dangling down and
will surely get caught on something before long. I'd like to repair it
before it gets worse.

What it used to look like:

https://www.carid.com/images/replace...fo1000518v.jpg

What it looks like now (taken from below, looking up toward the
radiator):

http://i68.tinypic.com/oiu492.jpg

How can I fix this? the broken surfaces need to be strong against
pulling-apart forces, so I guess simple glue or tape won't cut it. I
was thinking of maybe drilling holes on each side and lacing the breaks
together with wire or plastic zip ties. Appearance is unimportant, as
this is underneath the car and not normally visible.

Any suggestions?

Have you thought about epoxy? A chemist will be here soon.
Is the material plastic or carbon fiber. Dang If I know.