What is the plastic next to the fender?

[Daniella]

The plastic next to the fender is called the wheel arch trim. Below is relevant information about the fender: 1. Introduction to the fender: The fender, also known as the wing panel (Fender), is categorized into front fender and rear fender based on its installation position. It refers to a type of covering component on motor vehicles and non-motor vehicles. 2. Function of the fender: The fender is also called the wing panel (named for its shape and position resembling a bird's wing on older vehicle bodies). The fender is located on the outer side of the wheel. Its function, according to fluid dynamics, is to reduce the drag coefficient, making the vehicle's movement more stable. Based on installation position, it is divided into front fender and rear fender. The front fender prevents gravel and mud kicked up by the wheels from splashing onto the underside of the vehicle during driving, thereby reducing damage and corrosion to the chassis.

[Bentley]

As someone who drives frequently, I'm well aware that the plastic next to the fender mainly refers to the wheel arch liner of the car, which is primarily made of plastic, such as polypropylene material, being lightweight and rust-proof. It surrounds the wheel at the bottom of the vehicle, with the core function of blocking splashing mud, dust, and small stones, preventing them from flying into the engine or under the chassis. Otherwise, long-term accumulation can damage important components, like causing electrical shorts or rust. Additionally, when driving in the rain or on muddy roads, it can reduce noise, making your drive quieter. This part is designed with plastic because it's lightweight, which helps reduce the vehicle's fuel consumption, and it's also inexpensive and easy to replace. If that plastic ages or cracks, it's recommended to go to an auto repair shop for a replacement promptly, as once it's damaged, mud and water getting in can accelerate corrosion of the fender, making repairs more costly. During regular car washes, take the time to clean underneath it to keep it clean and extend its lifespan.

[VanAllie]

Having been into cars for several years, the plastic piece next to the fender is actually called the wheel arch liner or fender liner, designed to block mud and prevent splashing. Let me remind you to regularly check for cracks or loose screws—plastic tends to age and crack on bumpy roads, especially becoming brittle in extreme heat or cold. Maintenance is simple: just use a soft brush to clean off mud during car washes to avoid clogging drainage holes. If it does break, don’t worry too much—replacing it isn’t expensive. OEM parts cost around a hundred bucks, and you can DIY with just a screwdriver and wrench (plenty of online tutorials available). After reinstalling, test for a snug fit to prevent mud and water from entering the engine bay during drives, which could lead to issues like wire corrosion or overheating. In short, this small part plays a crucial role in long-term vehicle health. I always inspect mine carefully before off-roading.

[ChristopherLynn]

For families with children, safety comes first when driving. The plastic near the fender is a protective shield for the wheel area, blocking flying stones and muddy water. If neglected, problems may arise: once the plastic piece breaks, small stones can easily penetrate the fender, causing more significant damage; rainwater and mud seeping into the engine compartment may lead to short circuits or rust, even affecting the brake system. This part is typically made of ABS plastic, designed for durability but prone to cracking over time, especially in cold winter conditions. It's recommended to inspect it every six months, particularly after long trips, and replace any cracks promptly to avoid accidents. While it's not a critical component, ignoring it can increase risk and costs. Replacement is inexpensive, and maintaining it well ensures safer family trips.

[AllisonFitz]

From a material perspective, the plastic used on fender edges is mostly polypropylene or glass fiber-reinforced components, which are lightweight and corrosion-resistant. I understand why manufacturers choose plastic over metal: the weight reduction helps save fuel, plastic molds quickly at lower costs, and it easily absorbs impacts to reduce noise. In vehicle design, it serves as a wheel arch liner, preventing mud and salt from corroding the chassis, thereby extending overall lifespan. The downside of plastic is its susceptibility to fatigue, potentially deforming or cracking after a few years—when this happens, avoid temporary patches and opt for a complete replacement to ensure proper sealing. Maintenance is straightforward—just clean with a neutral detergent, avoiding harsh chemicals that could cause brittleness. Overall, this choice reflects the practicality and cost-efficiency in automotive engineering, balancing environmental benefits with weight reduction.