Weekend trips or long car trips often require more space than a standard trunk can provide. In such a situation airbox becomes the ideal solution to free up the cabin for passengers and place bulky cargo above. Buying a new product from premium brands can put a strain on the budget, so many motorists are considering the option of purchasing used equipment. This is a smart move that allows you to save up to 50-60% of the retail price.
However, the used market is full of both great deals and hidden pitfalls. Plastic box exposed to ultraviolet radiation, temperature changes and mechanical damage, which can significantly reduce its service life. It is important to understand that fastening reliability and tightness are issues of road safety, and not just comfort. In this article, we will look at what to look for when inspecting, what brands to look for, and where it is best to look for proven specimens.
You don't have to be an expert in the field of car accessories to choose a decent option. It is enough to know the key points that experienced drivers look at. We have prepared a detailed algorithm of actions that will help you avoid buying illiquid goods and find really high-quality roof rack for reasonable money.
Benefits and risks of buying used equipment
The main argument in favor of buying a used airbox is, of course, savings. New models from market leaders such as Thule or Atlant, are not cheap, especially considering the need to purchase crossbars and fasteners separately. A used box is often sold complete with the necessary mounting hardware, which makes the deal even more attractive. You get premium quality plastic and aerodynamics at the price of a budget analogue.
On the other hand, the risk of running into hidden defects remains high. The plastic from which the box is made loses its properties over time when exposed to sunlight. Ultraviolet makes the material brittle, and even a slight impact during installation can lead to a crack. In addition, the locking and fastening mechanisms may be worn out, which will require additional repairs or replacement of components.
⚠️ Attention: Never buy a box if its surface shows deep scratches down to the base of the plastic or traces of repair using glue. The seal of such a product is already broken, and in the rain all your cargo will get wet.
It is also worth considering obsolescence. Older models may have a less convenient opening system or be designed for older types crossbars, which do not fit your modern car. Therefore, before purchasing, be sure to check the compatibility of the mounting system with your car.
Key brands and models on the secondary market
When looking for a used airbox, first of all you should pay attention to time-tested brands. The Swedish company has remained the market leader for many years Thule. Their models such as Force, Pacific or Motion, are distinguished by high reliability and excellent aerodynamics. Even used copies of these series often last for years without complaints if the previous owner handled them carefully.
Other popular brands often found on the aftermarket include Atlant, Lux and Inter. Russian and Chinese manufacturers also offer decent options that are easier and cheaper to repair. However, when purchasing used models of these brands, you need to be especially attentive to the quality of the plastic, as it can fade faster than its premium counterparts.
When choosing a model, pay attention to volume. For urban use and short trips, a box with a volume of 300-400 liters is sufficient. If you plan to transport skis or snowboards, you will need a long model with a capacity of 450 liters or more. Dimensions The boxes must match the length of the roof of your car so as not to block the view through the rear view mirror.
Detailed condition check before purchase
Visual inspection is the first and most important stage of inspection. Approach the inspection of a used airbox with the same care as choosing the car itself. Inspect the case in good lighting, preferably daylight. Look for signs of fading, which appears as a change in the color of the plastic (it becomes dull or yellowish). This indicates prolonged exposure to the sun and possible fragility of the material.
Pay special attention to the bottom of the box and the attachment points. This is where cracks most often occur from vibration and stress at high speeds. Check the operation of the locks: they should open and close easily, without jamming. If there are several keys, check the operation of each of them. The lock getting stuck in transit can be a big problem, especially if the box gets stuck in the closed position.
☑️ Checklist for inspecting a used airbox
Don't forget to check the inside of the box. There should be no traces of mold, unpleasant smell of dampness or rust on metal elements. The presence of mold indicates that the box was stored damp, which could negatively affect the structure of the plastic and rubber seals.
Specifications and Compatibility
Before you buy a used airbox, you need to make sure it is compatible with your car. The most important parameter is the type of attachment to the crossbars. There are mounting systems for square, oval and aerodynamic bars. Some modern models are equipped with a universal system T-System, which allows you to attach the box directly to factory roof rails or special gutters.
It is also important to consider the load capacity. Although the box itself can support significant weight, the maximum load is determined by the weakest link - the weakest link in the chain, which most often is the cross members or the roof of the car itself. The documentation for the car usually indicates the maximum value of static and dynamic load. It is strictly forbidden to exceed these values.
| Parameter | Description | What does it affect? |
|---|---|---|
| Volume (liters) | Interior space (300-900 l) | Quantity and dimensions of cargo |
| Length(cm) | Distance from nose to tail | Compatible with car roof length |
| Load capacity (kg) | Maximum cargo weight | Auto safety and stability |
| Mounting type | Arc grip shape | Can be installed on your crossbars |
Pay attention to aerodynamic properties. The well-designed box has a streamlined shape that reduces wind noise and fuel consumption. Cheap or older models may have an angular shape that will create a lot of aerodynamic noise on the highway, annoying the driver and passengers.
Where to look for great deals
You can search for a used airbox on several sites. The most popular are message boards such as Avito or Drom. There you can find offers from both individuals and stores selling demo or restored copies. Private traders often sell boxes cheaper, but the risk of running into hidden defects is higher.
Specialized forums and groups on social networks are another great source. Equipment is sold there by enthusiasts who often monitor the condition of their belongings. In thematic communities you can read reviews about a specific seller or model. In addition, you can also find tips on repairing or tuning the purchased box.
The secret to a successful purchase on the forum
Often on forums they sell boxes immediately after a vacation, when people realize that next year they will use a different vehicle, or vice versa, before the season, when they buy a new one. The best time to buy is late autumn or early spring, when demand drops.
Don't ignore pawn shops and auto parts consignment stores. Sometimes almost new things that the owners handed over urgently end up there. However, these places rarely offer a guarantee, making a thorough on-site inspection even more critical.
Installation and first launch
After successfully purchasing and delivering the box home, do not rush to immediately load heavy things into it. First of all, do a dry fitting on the car. Install the box onto the crossbars according to the instructions, but do not tighten the fasteners all the way yet. Check that the installation is symmetrical and free of distortions.
Then check the operation of the opening mechanism. The box should open on both sides (if provided for by the model) without effort. Make sure that the cover does not touch the car body when opening, especially if you have a hatchback or station wagon with a high tailgate.
Tip: Before your first trip on the highway, be sure to do a test drive around the city. Listen to extraneous noises and check if the wind is whistling at the joints. If all is well, you can safely set off on a long journey.
It is important to correctly distribute the load inside the box. Heavy objects should be placed closer to the center and lower to lower the vehicle's center of gravity. Light but bulky items can be placed on top or along the edges. This will ensure better vehicle stability on the road.
Maintenance and service life extension
In order for a purchased used airbox to serve you for a long time, you need to properly care for it. Regular washing removes dirt and grime, which can act as an abrasive. Use a soft sponge and car shampoo. Do not use aggressive chemicals or abrasive powders, they can damage the protective layer of plastic.
Periodically lubricate the lock and hinge mechanisms with special silicone grease. This will prevent the locks from freezing in winter and corrosion of metal elements. Once a season, check the condition of the rubber seals. If they begin to harden or crack, they can be replaced or treated with a special rubber conditioner.
⚠️ Attention: Do not permanently store the box on the roof of your car when not in use. Prolonged exposure to the sun and wind accelerates the aging of plastic and increases fuel consumption due to windage. Remove it when not in use.
When storing at home, it is better to keep the box disassembled or at least open, so that mold does not form inside from residual moisture. The ideal place for storage is a dry garage or storage room, away from direct sunlight and heating devices.
Frequently asked questions (FAQ)
Is it possible to wash a car with a box in an automatic car wash?
Depends on the type of sink. The box can be washed on washbasins with brushes (portal), but there is a risk of damaging it or tearing off the fastenings if they are installed incorrectly. On touchless high-pressure washers, you need to be careful with the jet pressure so as not to damage the seals and locks. It is best to use hand washing.
Does boxing significantly increase fuel consumption?
Yes, aerodynamic drag is increasing. An empty box can increase consumption by 0.5-1 liter per 100 km. A fully loaded box will add even more. Aerodynamic models (drop-shaped) affect consumption less than square ones.
Is it safe to leave the box on the roof outside overnight?
The boxes are equipped with locks, but they are more of a symbolic nature, protecting against accidental opening rather than burglary. Leaving valuables inside overnight in an unguarded parking lot is risky. In addition, temperature changes can condense moisture inside.
What is the maximum speed you can reach with the box?
Manufacturers usually do not recommend exceeding speeds of 130 km/h. At high speeds, the load on the fasteners increases and the vehicle's handling deteriorates. In addition, noise and fuel consumption increase.
Will the box fit from one car to another?
The box itself is universal, but the mounting system may differ. If the new car has a different type of roof rails or crossbars, you may have to purchase an adapter or new mounting feet. Always check compatibility before installation.
Buying a used airbox is a great way to save money if you're willing to take the time to do a thorough inspection. The main thing is not to chase the lowest price, but to look for quality condition and a proven brand.