What is the left fender assembly of the car?
The left fender assembly of a car is the set of curved protective panels installed behind the left front or rear wheel. Its main function is to prevent the splashing of mud, gravel, and rainwater during driving, protecting the car's paint finish and chassis components. It is usually composed of two parts: the outer wheel arch and the inner lining plate. It is not a single plastic piece.
Structure composition:
Wheel arch (outer hard layer): A semi-arc-shaped hard plate protruding above the wheel, commonly made of black matte plastic, responsible for blocking large particles of mud and sand, and also contributing to the car's appearance.
Inner lining plate (inner soft layer): A soft lining plate closely attached to the inner side of the wheel arch, mostly made of rubber or a mixture of rubber and plastic, filtering fine dust and water splashes, and also reducing tire noise.
Materials and characteristics:
Rubber/soft rubber: Good flexibility, resistant to low temperatures and less prone to cracking, better impact resistance against gravel.
Engineering plastic: Lightweight, corrosion-resistant, and less likely to rust when in contact with rainwater or de-icing agents.
Installation Instructions
After installation, the ground clearance of the chassis will slightly decrease. Be careful of scratches when driving on gravel roads or muddy and deep ones. When washing the car, remember to clean the accumulated dirt on the inner side of the mud guard, as it can extend the service life.
The main function of the left mud guard component of the car is to protect the body and the chassis, blocking the mud, water, and stones thrown up by the wheels.
Specifically, there are several aspects:
- Protecting the car paint and the body: Preventing sand and stones kicked up by the tires from splashing and scratching or damaging the paint near the doors and wheel arches, and also reducing the adhesion of mud and water, keeping the body clean.
- Protecting the chassis components: Blocking mud, dust from entering the chassis, avoiding premature rusting of pull rods, ball joints, etc., and also reducing the impact of debris on engine and other components.
- Improving the driving experience: Reducing the splashing water and mud from the wheels on rainy days, avoiding dirtying the car body and people getting on and off; at the same time, it can reduce the entry of mud and sand into the mechanical structure, reducing component wear and maintenance costs.
It should be noted that the mud guard is not an original factory standard item. Whether to install it can be decided based on the driving environment: if you often drive on muddy and sandy roads, installing it will have a very obvious protective effect; if you mainly drive on smooth urban roads, it has little impact and installing it also has the risk of the mud guard being broken when passing through rough roads and may increase some wind noise at high speeds.
If there is a fault in the left mud guard component of the car, the core is to determine the extent of damage: minor scratches or cracks can be repaired by oneself, while damaged, broken, or severely deformed ones are recommended to be replaced directly. The mud guard is responsible for blocking mud and stones, and if it is not repaired, mud and sand are likely to enter the engine compartment, and stones may also damage the car paint. In the long run, it will cost more.
First, determine the fault level
- Minor scratches or abrasions: Use sandpaper to smooth it out, then apply a patching paint pen or matching paint, and polish it.
- Small cracks but not broken: Clean the area around the crack, use a plastic welding gun to weld it, then polish it and spray paint; you can also use automotive repair glue or epoxy resin to repair it.
- Damaged, broken, or severely deformed: Replace it directly. The mud guard is usually fixed by clips or screws, it's not difficult to do yourself, but be sure to choose the matching parts for the vehicle model, and tighten the screws.
Don't overlook these details
If there is oil stains on the inner side of the left front wheel mud guard, it may not be damaged itself, but it may be oil from the shock absorber or brakes splashing up. If the brakes become soft, check the rain repellent water tank cover or the drainage pipe of the sunroof immediately.
The left front wheel mud guard drips water, most of the time it is normal, such as the windshield wiper water or the drainage of the sunroof; but if it keeps dripping, check the rain repellent water tank cover or the drainage pipe of the sunroof.
When driving on rough roads frequently or in winter, the clips are prone to aging and loosening, you can regularly push the edge of the mud guard with your hand to see if it is loose or noisy.
If you do it yourself, prepare a screwdriver and a wrench, clean the installation position first, remove the old part, install the new part and tighten it. If the screws are rusty and cannot be removed, or you are not sure, directly go to a repair shop or 4S store for handling is more convenient.
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