What is the plastic panel under the rear bumper called?

[DeAriana]

The plastic panel under the bumper refers to the car spoiler, which is mainly designed to reduce the lift generated during high-speed driving, thereby preventing rear wheel lift. This plastic panel is usually secured with screws or clips. Additional information: 1. The plastic shell under the headlights consists of the bumper, which is composed of three parts: the outer panel, buffer material, and crossbeam. 2. Function: It not only enhances the overall appearance of the vehicle but also absorbs and mitigates external impacts, protecting the front and rear of the car body. During a collision, it helps protect pedestrians and reduces injuries to passengers even in high-speed impacts.

[StElijah]

Last time I accidentally scraped the curb while reversing, the mechanic told me that the plastic panel under the rear bumper is commonly called the rear bumper lower guard or lower skirt. Its main functions are to protect the undercarriage components from scratches and to enhance the vehicle's appearance. It's made of reinforced plastic, which is quite durable, but prone to cracking or deformation if frequently driving on rough roads or scraping while reversing. Regular inspections are recommended to prevent minor issues from escalating. Additionally, it's separate from the taillights and the main bumper body, making replacement relatively inexpensive and usually manageable at a repair shop. It also contributes to driving safety by reducing noise and dust intrusion when intact. In short, this is a common yet often overlooked component, and paying attention to it can save a lot of trouble.

[Theodore]

In our repair shop, we often encounter car owners asking about this part, commonly referred to as the rear lip spoiler or diffuser guard. It's made of polypropylene material and fixed below the bumper, serving to prevent scratches and improve airflow. In practical work, common issues include loose screws, impact damage, or aging cracks. We use diagnostic tools to check if it affects other systems. During replacement, the old panel must be removed and a new one installed, while also cleaning the chassis of debris to prevent sealing issues. The repair cost is relatively low, ranging from tens to hundreds of dollars, but it's best to go to an authorized shop to avoid substandard products. Regular maintenance is recommended quarterly to ensure driving safety and stability. Remember, protecting this component can extend the vehicle's lifespan.

[DeJosephine]

When modifying vehicles, I often deal with the component under the rear bumper, known as a diffuser or lower spoiler in the industry. Well-designed, it enhances the vehicle's aerodynamics and improves high-speed stability. The factory usually uses plastic, but enthusiasts upgrade to carbon fiber or metal materials. In practical use, it prevents road debris from damaging the chassis and exhaust system. Maintenance is simple—just rinse off mud and sand—but during modifications, ensure it matches the bumper's curvature to avoid looseness. In short, though small, this component significantly impacts overall performance and appearance, making it worth understanding in depth.