A Fender is the curved panel that sits above the wheels on both the front and rear sides of a vehicle. Its main role is to frame the wheel wells and prevent debris (mud, rocks, water, sand) from being thrown into the air by the tires.
In some countries, the rear fender is often called a quarter panel, since it’s welded into the car’s structure, while front fenders are usually bolted on.
 Functions of Fenders
Wheel Protection – Keeps dirt, gravel, and debris from hitting pedestrians, other vehicles, or the car’s body.
Aesthetics – Blends the wheel area into the body design for a smooth look.
Aerodynamics – Shapes airflow around the wheel area for better efficiency.
Safety – Prevents objects picked up by tires from causing accidents.                                                                                                                             Â
Types of Fenders
Standard Fenders: Stock panels above wheels on most sedans and SUVs.
Quarter Panels (Rear Fenders): Large panels that wrap around the back wheels, extending to the trunk.
Fender Flares: Extended edges around the fender (common on trucks/SUVs) to cover larger/wider tires.
Custom / Widebody Fenders: Enlarged panels for sport or performance cars to fit wider wheels.
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Materials used to make fenders
Steel – Strong and durable, traditional material.
Aluminum – Lightweight, rust-resistant.
Fiberglass / Carbon Fiber – Common in aftermarket or racing cars.
ABS Plastic – Used for fender flares and trim extensions.