What is the beam under the car door called?

1 Answers
MacAdriel
07/29/25 9:11pm
The horizontal bar under the car door is called the side skirt or lower bumper skirt. Here are the specific details about car side skirts: 1. Material: The lower bumper skirt is made of ABS engineering plastic, while aftermarket large/small body kits and skirts generally use ordinary plastic or fiberglass. 2. Function: The side skirt refers to the skirt panels installed on both sides of the vehicle body, serving the same purpose as an air dam by reducing airflow entering under the vehicle. It has certain aerodynamic effects and can significantly reduce air resistance under specific conditions. Proper installation can minimize reverse airflow generated during vehicle operation.
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