How important is this part?

[69mach1-395]

The little plastic piece in front of the rear tires...it scrapes my driveway entrance occasoinally and yesterday I found one partially detached. I will see if I can fix it but it is pretty small, aero wise. Is that it's function? Would I miss them if they weren't there?

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[John S]

I removed mine and I've never seen any objective explanation of the aero function on Mustang applications.

 

[1 old racer]

its a drip rail. now problem removing it wont have a bad effect except maybe more dirty water on the side of your car

 

[Crew4991]

The piece located just in front of the rear tire and underneath the side skirt is called the Rocker Molding Rear Deflector. It’s a small plastic component that helps improve aerodynamics by directing airflow around the rear tires and it also helps keep water, rocks, dirt and other road debris from being kicked up into the rear wheel well area. It is not that important and can be left off. I doubt anyone would actually notice a difference.

 

[69mach1-395]

Thanks for all the replies...it was a T20 bit away from repair. I added a washer as it looks to have pulled thru the hole.
I have 2x4s in front of my drive entrance to prevent this, but I guess I missed recently. I will be more careful...

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