Operating a car on Russian roads often becomes a real test for its body, especially for the lower parts of the wings. For owners Škoda Octavia Tour This problem is especially acute since this model is often used in the taxi or commercial segment, which implies high mileage and aggressive use.
Loss of integrity or complete absence of the anterior wheel arch liners leads to accelerated wear of the paintwork, the entry of abrasive particles into the engine compartment, and even failure of ABS sensors. In this article we will analyze in detail how to correctly select, replace and install arch protection on your car in order to preserve its appearance and technical condition for a long time.
Functional purpose and design of the fender liner on the Octavia Tour
Many drivers mistakenly believe that fender liner - This is just a decorative element designed to hide dirt. In fact, it is a critical component of the aerodynamics and body protection system. It acts as a barrier that prevents stones, salt and water splashed by the wheel from directly contacting the metal surface of the wing and suspension parts.
On the model Octavia Tour (A4) The arch protection design has its own characteristics that are different from newer generations. Here a plastic shield is used, which is attached to the wing using special clamps and bolts. Proper installation not only ensures cleanliness, but also reduces noise levels in the cabin when driving at high speeds.
It is important to understand that the absence of this element can lead to dirt beginning to accumulate in hard-to-reach places, creating conditions for the development of corrosion. This is especially true for regions with a harsh climate and a large amount of reagents on the roads.
Materials of manufacture: plastic, rubber or felt?
When choosing a new security element, you will be faced with three main types of materials, each of which has its own advantages and disadvantages. Factory version on Škoda Octavia Tour most often made of durable plastic, but other solutions are widely available on the market.
Heat resistant plastic is a classic choice that provides excellent rigidity and shape. It does not deform under the influence of heat from the brakes and does not crack in the cold. However, if subjected to a strong impact, the fragile plastic may crack, requiring replacement.
Rubber plastic or reinforced rubber has greater elasticity. This fender liner better absorbs impacts from stones and does not break when the suspension is deformed. The downside may be its ability to stretch over time if it is of poor quality.
Felt It is used less frequently, as it quickly absorbs moisture and dirt, becoming heavy and a source of unpleasant odors. However, some car owners prefer it for its excellent sound insulation properties.
Version differences and compatibility nuances
Model range Octavia Tour includes different modifications of the body and engines, which directly affects the type of fender liners used. An incorrectly selected element may simply not fit into the standard places or block access to necessary components.
The most critical factor is the presence or absence of a system ESP and tire pressure sensors. On some versions, the fender liner has special cutouts or fastenings for wiring sensors. If you install a part from a simple version on a car with sensors, you will have to drill additional holes, which is undesirable.
Also worth considering the type of body: liftback and station wagon Octavia Tour They have minor differences in the geometry of the front wings, although the wings are often interchangeable. Always check the part catalog number before buying to avoid mistakes.
- Plastic (factory)
- Rubber-plastic (flexible)
- Felt (noise insulation)
- Metal (extremely rare)
Diagnosis of damage and causes of failure
Inspection of the front arches should be a regular procedure, especially after off-road travel or in winter. Cracks And chips on the underplates often go unnoticed until dirt starts flying directly onto the engine or radiator.
A frequent problem is the separation of fasteners. Plastic clips holding the part become brittle over time and break when washed or lightly impacted. As a result, the under-wings begin to dangle, creating an unpleasant rattling sound on the bumps.
The second common reason for replacement is deformity after an accident. Even a slight touch of the curb can lead to the fact that the plastic part will lose its shape and stop fitting tightly to the body. In that case, The substrate ceases to perform its protective function and requires immediate replacement..
Pay attention to the state of the inside of the arch. If you see traces of corrosion on the wing itself, then the underwing has long been unable to cope with its task or was installed leaky.
Instructions for self-replacement of the wing
Replacement of the front wing with Octavia Tour A task that any car owner with a minimum set of tools can handle. The process does not require lifting the car into the hole, it will be enough jack and wheel remover.
First, it is necessary to loosen the bumper mount in the arch area. Usually there are several screws or plastic clips that need to be carefully removed. Then dismantle the wheel to gain full access to the wing interior and the wing mounts.
Unscrew all the bolts and remove the old locks. If they are broken and left in holes, use a thin drill or extractor to extract them. Clean the seat of dirt and rust before installing the new part.
Install a new underwing, having previously tried it on the place. Lock it with bolts and new clips. Make sure it fits tightly to the bumper and wing along the entire length.
☑️ Preparing to replace the fender liner
Common installation errors
If you do not clean the rust under the fastener, the new underwing will quickly lose its tightness. It is also important not to pull the bolts so that the plastic does not burst, and not to leave gaps between the bumper and the arch.
After installation, check whether the wings catch the wheel when turning the steering wheel and whether it touches the disk when the car is fully loaded. This is a critical step that will prevent damage to a new part on the first trip.
At the end of the work can be applied to the place of fastening anti-corrosion composition or mastic to prevent moisture from entering the fixation zone. This will extend the service life of both the underwing and the body of the car.
Before the final tightening of all mounts, ask the assistant to shake the suspension a little so that the under-wing takes a natural position under load.
Comparison of original spare parts and analogues
The auto parts market offers a huge selection of underwings for Škoda Octavia TourAnd the price may vary significantly. The original from the manufacturer always guarantees the perfect fit and quality of the material, but its cost is often overstated.
Chinese analogues represented by brands like KYO or StartVThey often have softer plastics and require refinement during installation. However, with the right approach, they can serve as well as the original for a quarter of the price.
There are also underwings from Russian manufacturers, which are distinguished by increased material thickness and often come complete with a set of improved mounts. They are in demand among owners who operate cars in harsh conditions.
| Characteristics | Original (VW Group) | High-quality analogue | Budget analogue |
|---|---|---|---|
| Material | Heat resistant plastic | Reinforced plastic | Fragile plastic |
| Wall thickness | 3.5-4 mm | 3 mm | 2-2.5 mm |
| Landing | Perfect | Minor improvements | Requires drilling |
| Price | High | Average | Low |
Additional protection and tuning arches
After installing a new backrest, many owners decide to strengthen the protection of the arches with additional measures. This is especially true for cars with high mileage, where the wing metal already has traces of wear.
Application liquid plastic Or rubber protection on the inner surfaces of the wing and the wing itself creates an additional barrier. Such compositions perfectly extinguish stones and prevent corrosion.
Also popular is the installation of additional plastic aprons under the bumper, which cover the lower part of the underflate. This reduces the amount of dirt that gets on the body and improves the appearance of the car.
Regularly washing the underwings and checking the mounts is the easiest way to extend the life of your car body and avoid costly repairs.
Frequently asked questions (FAQ)
Do I need to change the slats with a pair or can only one?
There's no definitive answer. If the damage occurred due to the impact, it is enough to replace only the injured party. However, if the old slat has faded or become brittle, it is best to replace both to avoid desynchronization in the future and ensure the same appearance.
Can I put a slap on the back instead of a bolt?
It is not recommended to rely only on glue. The slat experiences vibrations and loads from the airflow. The glue can move away, and the part will fly off on the move. Use regular bolts and clips, and glue only as an auxiliary means for sealing.
How do you get rid of the creaking underbelly?
Screeching usually occurs due to the friction of plastic against the metal or bumper. To remove it, glue the contact areas with damping material (for example, Vibroplast or felt tape. Also check if the mounting bolts are tightened.
Does the underbelly affect the operation of the ABS sensor?
Yes, if the backrest is installed incorrectly or deformed, it may touch the wiring of the ABS sensor or change the gap between the gear ring and the sensor. This will cause an error on the dashboard. Always check for free travel at the sensor after installation.
How often do fender liners need to be changed?
The service life depends on the quality of the plastic and the operating conditions. On average, a high-quality underwing serves 5-7 years. If you see multiple cracks or have lost shape, a replacement is inevitable. Regular examination allows you to identify the problem at an early stage.