What is this thing that fell off?

[99WhiteC5Coupe]

Found this on my driveway this morning.
2017 Expedition EL Limited

I looked around under for where it would fit with some new hose clamps, but I cant find it.
Anyone?


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I have a 2015 Expedition Limited 4x4, purchased new, with the original exhaust system.

I lowered my spare tire today to check the tire pressure. Here is a picture of the part that fell off of your car. Note that it is at the beginning of the rear muffler (forward of the muffler).

The photo should provide you with a view to show you how to position the shield if you attach it with stainless steel straps. The photo view is taken from the rear of the vehicle with the spare tire lowered.