I am not sure what it is called, that heavy-duty plastic thing that fits
under the front bumper, and looks like a second lower  bumper. Perhaps it is
is some kind of protective shield against dust and pebbles.

  Anyway, after a collision, one end of this plastic bumper came lose. The
only way to fix it was with glue, since the screw hole was split. I tried
several glues, but it came loose each time. My town is world-famous for
having the worst potholes in the civilized world, but does not wish to
overly publicize the fact, for some mysterious reason, perhaps connected to
city attorney's salaries.

 Finally, I tried DevvCon Plastic Welder (3500 PSI), and it worked - so
far.
 I did a Google Search for "strongest glue," and found that some people
think that Fas-Stick #110 is the world's strongest glue. Maybe I'll get some
and see. The website is:

   http://www.fascopoxies.com

No information about sturdy ole #110 on website,though. Price unknown.

Fasco Unlimited of Hialeah, Inc. (I wonder if they glue horseshoes?)

1-305-821-9441 8am-4:30 PM EST