Is this a useless ornament?

In article >, says...
>
>
>'02 300M had an argument with a mound of packed snow, which severely
>damaged the flimsy plastic piece that runs pretty much the full width of
>the car, attached to the underside of the front bumper by push-in
>plastic fasteners.
>
>Doe this thing serve any useful purpose? -- e.g., improving
>aerodynamics, improving cooling (esp. of the disc brakes)? If I don't
>like the cost of a replacement (even one from a wrecking yard), would
>there be any significant disadvantage in simply pitching the old one and
>going without?

That's an airdam. Yes, it serves a purpose. You should replace it.
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Alex