What is this part called?

Subaru refers to this as an air flap. It’s found in front of the wheel and is listed under the spoiler section in their parts catalog. Rear air flaps are also grouped with spoilers, while front ones fall under the mud guard category.

@Jean
This is correct. Subaru labels it as an air flap in their catalog.

CarEnthusiast said:
@Jean
This is correct. Subaru labels it as an air flap in their catalog.

This reply affirms the correct identification.

rodneyjames said:

CarEnthusiast said:
@Jean
This is correct. Subaru labels it as an air flap in their catalog.

This reply affirms the correct identification.

Just to clarify, Subaru’s air flaps are categorized differently depending on the position. Front ones are under mud guards, rear ones are under spoilers.

These are air flaps designed to improve aerodynamics by reducing drag caused by the face of the tire.

DavidDaniel1 said:
These are air flaps designed to improve aerodynamics by reducing drag caused by the face of the tire.

This flap is located behind the tire, not in front. Initially, I thought the same, but the texture (rock guard, not orange peel paint) clarified it.

@Jonah
In that case, it helps reduce drag caused by the flat rear face of the tire.

CorollaChris4 said:
@Jonah
In that case, it helps reduce drag caused by the flat rear face of the tire.

Lmaooo. Thanks for the laugh!

@Jonah
That texture is rock guard, applied under the base coat. Orange peel is caused by a flawed clear coat application.

If it’s loose, just bolt it down. The plastic washers used are pretty flimsy.

Funny timing—I just noticed a missing clip on one of these on my '23 Impreza.

It’s referred to as a splash guard.

Daphne said:
It’s referred to as a splash guard.

True, though some flaps do flap!

The full name is Plate Air Flap.

It’s a mudflap.