Pickup truck owners Nissan Navara D40 generations often face the need to replace body parts after severe operational loads. The rear fenders of this model are subject to intense exposure to reagents, dirt and stones, especially given the high ground clearance and off-road nature of the car. Often this element is the first to suffer when used in off-road or winter roads.
Understanding the design features and available replacement options is critical to restoring the appearance and protection of the body. A low-quality part can lead to corrosion, disruption of body geometry and problems with bumper installation. You have to choose between original spare parts, high-quality analogues or restoration of damaged metal.
Design features and vulnerabilities
Rear fenders on a pickup truck Nissan Navara The D40s are made of steel and have a complex shape that follows the lines of the arch and the cargo compartment. The main problem of this element is the presence of hidden cavities and a complex configuration of contact zones with other parts, which makes access difficult during repairs. Moisture and salt often accumulate at the joints with the rear bumper and fender liners.
Original steel has a certain margin of safety, but over time it loses its anti-corrosion coating. Owners often encounter rotting in the lower part of the wing, where water accumulates after washing or rain. Particular attention should be paid to the attachment points to the frame side members.- 🛠️ Check the condition of the amplifiers inside the arch before purchasing a new part.
- 🚧 Pay attention to the quality of stamping of stamped stiffeners.
- 🌧️ Inspect the drainage holes, which often become clogged with dirt and cause moisture accumulation.
It is important to understand that the geometry of the wing directly affects the gaps with the door and the C-pillar. Even a slight deformation can cause the door to close with force or leave a gap allowing dust to enter the interior.
⚠️ Attention: When inspecting the car, be sure to check for traces of putty in the upper part of the arch where the wing is attached to the cab. This is a common sign of hidden corrosion or previous poor quality repairs.
Comparison of materials: steel, plastic and aluminum
The aftermarket offers several options for rear fender materials. Most factory parts for Navara Made from galvanized steel, which provides a balance between strength and cost. However, there are alternative solutions that may be suitable for specific applications.
Steel wings are standard, but they are susceptible to rust if the protective layer is damaged. Plastic analogues Often found in low quality markets, they can change shape with temperature changes and are difficult to paint. Aluminum options are practically not found in the mass segment for this model.- 🔩 Steel: durable but heavy, requires careful anti-corrosion treatment.
- 🧪 Plastic: lightweight, does not rust, but can crack with a strong impact.
- ⚙️ Aluminum: expensive, lightweight, but difficult to repair and weld.
If you plan to use your pickup truck in tough off-road conditions, you may want to consider installing reinforced composite fenders. However, for normal operation it is better to remain within the factory standards.
Материал: Сталь (Zinc-coated)Толщина: 0.7-0.8 мм
Покрытие: Эмаль + Грунт
⚠️ Warning: Cheap plastic fenders often have incorrect mounting points, resulting in squeaks and vibrations when driving on rough roads.
Original versus analogues: what to choose?
When selecting a part for Nissan Navara D40 A dilemma arises: pay more for the original or save on an analogue. Original fenders (OEM) ensure that all holes and geometry match perfectly. The part number usually starts with a prefix 66000.
Analogs from manufacturers like StartVox or Max Auto may differ significantly in the quality of the metal. Often the steel thickness of such parts is less, which reduces their durability. In addition, the stamping geometry may be disrupted, which will require additional adjustment work.
| Parameter | Original (OEM) | High-quality analogue | Budget analogue |
|---|---|---|---|
| Fit accuracy | Perfect | good | Needs improvement |
| Metal thickness | Standard | Almost standard | Reduced |
| Primer | Factory | Partial | Missing |
| Price | High | Average | Low |
The choice depends on your goals. If you are selling a car or want to maintain its liquidity, it is better to choose the original. For work in the field, where aesthetics are secondary, a high-quality analogue is suitable.
- Perfect Fit
- Price
- Durability
- Manufacturer brand
Removal and preparation process for installation
Replacing a rear fender is a labor-intensive process that requires the removal of many adjacent elements. You will need to remove the rear bumper, fender liners, and also disconnect the wiring for the lights and sensors. Start by unscrewing the bolts securing the frame and inner arch.
Tools: set of sockets, ratchet, screwdrivers, hammer, mounting. Don't forget to prepare a penetrating lubricant for bolts that often stick due to corrosion. Work carefully to avoid damaging the wiring.- 🔧 Disconnect the battery terminals before starting work for safety.
- 🔨 Use a hammer to carefully knock out rusty bolts if they do not unscrew.
- 🧼 Clean the mounting points from dirt and old mastic before installing a new part.
If you are replacing only one wing, be sure to compare it with the original one to identify any differences in geometry. Sometimes the differences may not be noticeable at first glance, but will appear when painting.
☑️ Preparation for wing replacement
⚠️ Attention: When removing the old wing, be careful with the inside of the arch, there may be fragments of the old sealant that will prevent the new part from fitting tightly.
Repair and painting: stages of work
After installing the new wing, the preparation phase for painting begins. Even if the part already has primer, it must be processed. Remove the factory primer with grit sandpaper P240 or P320. Apply epoxy primer for better adhesion and corrosion protection.
Грунт: Эпоксидный 2КШпатлевка: Полиэфирная универсальная
Краска: База + Лак (2K)
Pay special attention to the junction of the wing with the rear pillar and bumper. Here it is necessary to use a high-quality sealant to prevent moisture from entering the body.
Before painting, be sure to degrease the surface with anti-silicone and use a sticky cloth to remove fine dust.
The nuances of fitting and sealing
Fitting the wing requires patience. Often you have to widen the bolt holes a little or bend the edges to get a tight fit. Use a marker to mark contact points. If the wing does not stand up straight, do not try to tighten the bolts by force - this will lead to distortion and cracks.
Sealing the seams is a critical step. Use polyurethane sealant on the joints with the bumper and pillar. This will ensure water resistance and protection against future corrosion. Apply the sealant in an even layer, without gaps.
- 🔒 Check that all bolts are tightened with the required torque.
- 💧 Make sure the sealant completely covers the joints.
- 🎨 Check the paint color in the sun to make sure the shade matches.
If you are using original fender with a number corresponding to the car's VIN code, there should be no problems with fitting if the part was not damaged during transportation.
What to do if the wing does not stand up?
Sometimes the wing geometry can be altered at the factory. In this case, you will need to carefully straighten the metal with a hammer and shims. Do not try to straighten the wing while hanging, use special mandrels.-->
Anti-corrosion treatment and protection
After painting, be sure to carry out a complete anti-corrosion treatment of the inside of the wing. Use mastic or liquid plastic coatings. This will create an additional barrier against moisture and reagents. Also treat cavities where paint does not get in.
Materials for processing
Movil, bitumen mastic, tektil. Apply them in several layers, allowing each to dry. Pay special attention to the lower edge of the wing, which most often comes into contact with water and dirt.
Don't skimp on protective materials. Cheap compounds can quickly peel off, leaving the metal unprotected. Choose proven brands specializing in auto chemicals.
Frequently asked questions from owners
At the end of the article, we have collected answers to the most popular questions that owners have. Nissan Navara D40 when replacing rear fenders.
Is it possible to install a wing from another model?
No, rear wings Nissan Navara D40 unique in their geometry and fastenings. Installing parts from other models will require enormous amounts of time and resources to rework the body, which is not economically feasible.
How long does it take for paint to dry on a fender?
Drying time depends on temperature and type of paint. When using acrylic enamels, complete drying takes from 24 to 48 hours. The varnish dries faster, but it is better to polish it no earlier than after a week.
Do I need to remove the bumper to replace the fender?
Yes, removing the rear bumper is necessary. It covers the lower part of the wing mount, and without dismantling it it is impossible to unscrew all the mounting bolts and correctly install the new part.
What to do if the wing rots from the inside?
If corrosion has affected the internal part, it is better to replace the entire part. Attempting to cut and weld the rust often results in the corrosion continuing under the putty and the fender deteriorating faster.