When it is a matter of roof boxes, the name “Thule” always comes on top. Am I right or wrong?! Definitely right! Thule roof boxes are the perfect solution and great assistance for your traveling task. Since its inception, it has been ruling over the roof box market worldwide. Nevertheless, sometimes people struggle with how to install a Thule roof box in the car.
If you’re a vivid traveler, outdoor sports enthusiast, or a passionate family member who needs additional luggage, the Thule roof box might be a perfect solution for you. Besides, it is safe, quick, and superb in each way. This article will discuss how to install a Thule roof box in the car. Let’s go down to find out –
How to Fit a Thule Roof Cargo Box – Instructions and Guidelines
Almost all car experts recommend not traveling with an empty roof box on the head of the car. It will make scratches on the rooftop of the vehicle as well as make a negative impact on the fuel efficiency. The result? Your car’s durability gets affected and the fuel consumption increases badly. As a result, your cost of fuel will also widen significantly.
With that said, purchasing a roof cargo box that is quite effortless to attach and remove is highly recommended. Since Thule is an expensive and high-end product, you should focus on buying the box that you can fix and remove without hassle.
Additionally, a roof rack is a much-needed tool if you want to install a Thule roof cargo box in your vehicle.
Yes, some vehicles automatically contain built-in roof racks. However, many cars don’t possess a roof rack at all. In such a case, you’ll need to purchase a roof rack by yourself from the market. Henceforth, those roof racks are primarily compatible with Thule since this is the leader in the roof box market.
Things You Should Notice Before Purchasing a Roof Rack
Before purchasing a roof rack for your beloved Thule roof box, you have to check out some essential things such as –
- Before buying or installing the rack, ensure whether it is adjusted with the roof box or not. However, Thule is the leading brand in the roof box arena. Therefore, almost all the top roof rack companies manufacture a product that can accommodate Thule.
- Before installing the rack, closely check whether the locks are working or not. It’s imperative.
- Check whether the roof rack is strong enough to hold the roof box for an extended period.
Installing a Thule Roof Box in the Car

We guess you’ve purchased a sophisticated and correct roof rack for the Thule roof box. It’s time to install the box in the vehicle. Our guidelines will make it easy for you to install the Thule roof box in the car. Therefore, let’s keep reading the instructions before installing the roof box. Here we go –
Step 1
Your roof box possesses two canals on the bottom side. You can easily use these canals to take the box onto the rack. Perhaps, you could take somebody’s help to do it. The main point is you’ve to do the task thoroughly so the box won’t face any problems.
Place the box in a way that it keeps enough distance from roof antennas. On the other side, it will stay adequate space from the rear so that you can still open the partition without a problem.
When you put the correct roof rack in the vehicle, it’s time the roof box must sit forward with each crater side-by-side.
Step 2
The Thule roof box manufacturing company usually provides four roof bar securing sections. They will surely fit into the box without a problem. Further, In order to slot the brackets into the right place, lift the roof box cover and find the slots.
There should be four slots installed in the four corners of the Thule box. Now, you’ve to steadily shove the bracket through the slots and grip each one anti-clockwise until you hear a signature click. It means that you’ve made it! You are successful in placing the Thule box in the correct position.
In addition, the bracket mustn’t catch the roof of the vehicle.
Step 3
Now, you’re ready to load the Thule cargo box. Before putting the belongings in the cargo, you must check its overall roof load capacity. Henceforth, you can check this on the user’s manual or the car’s manufacturer’s website. Don’t put too many things on the roof box. Yes, Thule is a highly advanced product.
However, you should be cautious before making it jammed with too many belongings.
Step 4
If you completely load the Thule roof box, you can now close the cover of the box. But, be careful that nothing can prevent the cover from closing entirely. Afterward, close the lid with the lock mechanism.
How to Remove the Thule Roof Box?
Removing the Thule roof box isn’t that difficult job indeed. All you need to do is follow some simple tricks. Firstly, unfasten the knobs inside the box until the clasp fully opens. Furthermore, those who possess U-shaped bolts and plates must unfasten the knobs and remove the bolts.
After that, you will be able to remove the Thule roof box from the rack. You can do the whole task in the case of a small-sized Thule box. But, it will be safe if you hire any professional regarding a larger box.
How to Install a Thule Roof Box? – FAQs
Can I open my Thule roof box without a key?
No, it’s not possible. You can’t unlock a Thule roof box without a key. All the Thule roof box generally comes with two or three keys. So, you should keep one key in your ring while keeping the other keys in a safe place.
How can I repair my Thule roof box?
Thule roof box is a highly advanced product. It doesn’t damage easily. Nevertheless, you can repair it at home with liquid rubber, epoxy, etc., in case of minor damage. On the other hand, if the product has been damaged hugely, take it to a plastic repair center. You can get Thule’s replacement parts quite conveniently available on the market.
What are Thule roof boxes made of?
Thule roof boxes are made of high-quality ABS material. These are high-end elements that shaped the box much sturdier.
Is it necessary to get a roof rack for Thule boxes?
Of course, it is. Without a roof rack, it’s not possible to fit a Thule roof box. Besides, the box will be more secured with a roof rack. So, a roof rack is necessary for sure.
Final Say – It’s time to use the Thule!
Thule boxes are made of high durability, are long-lasting, and are convenient to use. Moreover, there’s basically zero complication in installing a Thule roof box in the car. But, you’ve to check out the overall capacity of the box before purchasing. On the other hand, don’t forget about using it effortlessly.
So, what’s your opinion regarding our article? Do you think it fills your knowledge? If yes, then please let us know about your experience. By the way, thanks for reading the article! Stay blessed and happy installing!
Best Seller List of Thule Roof Cargo Boxes:

- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
- Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
- Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
- Max Weight Capacity: 100 pounds (45 kg)

- Functional rooftop cargo box provides 14 cubic feet of additional packing space
- Rugged and durable design keep contents protected
- FastGrip quick-mount system assembles in minutes
- Passenger-side opening for easy loading and unloading
- Central Locking system provides maximum safety
- Thule Comfort Key can only be removed when all locking points are securely closed
- Fits 3-5 snowboards (max length: 155 cm)
- External dimensions: 67 x 35 x 16 inches; Internal dimensions: 61 x 33 x 14 inches
- Load capacity: 110 lbs; Product weight: 34 lbs
- Height off crossbar: 16 inches. Fast and secure mounting

- Offers durability and maintains a sleek appearance, designed to handle daily use and the demands of active lifestyles
- A quick, secure, and intuitive mounting system that indicates when the cargo box is safely attached with a simple click
- Provides easy access to your cargo from both sides of the vehicle, enhancing convenience and efficiency
- Extensively tested for road safety and durability in the Thule Test Center, ensuring top-notch quality and reliability
- SlideLock system with separate locking and opening functions, automatically locks the lid in place and indicates when the box is closed securely

- Compact roof box, ideal for small loads such as camping gear or golf clubs.
- Space-saving design carries the load with room for other items on roof rack
- Sturdy U-bolts with reinforcement plates mount cargo box securely to the rack
- Passenger-side opening for easier loading and unloading

- Wing-shaped profile with a dynamic, forward-leaning nose for reduced drag and fuel efficiency
- Sturdy lid design with a wide handle for smooth opening and closing with just one hand
- Available accessories include interior box light, protective box liner, and storage cover
- Easy to mount thanks to the PowerClick quick-mount system. The integrated torque indicator “clicks” when it’s properly mounted, ensuring fast and secure fitting
- SlideLock system with separate locking and opening functions, automatically locks the lid in place and indicates when the box is closed securely

- Durable all-seasons HDPE material construction: Built with high-density polyethylene (HDPE), this product is designed to withstand extreme weather conditions, ensuring year-round durability.
- No tool assembly: Easily assemble without the need for tools, offering a quick and hassle-free installation process.
- Fits most OE and aftermarket cross rails: Engineered to fit a wide range of original equipment (OE) and aftermarket cross rails for versatile compatibility.
- All mounting hardware included: Comes with all necessary mounting hardware, so you have everything needed for installation right out of the box.
- Made in the USA: Proudly crafted in the USA, ensuring superior quality and craftsmanship.
- Lifetime warranty: Backed by a lifetime warranty, offering long-term peace of mind and confidence in your purchase.
- 18 cubic-foot capacity with 110 lb storage limit: Spacious design offers 18 cubic feet of storage with a sturdy 110 lb weight capacity, providing ample room for your gear and essentials

- A versatile roof-mounted cargo box for everyday use
- Narrow design leaves space for other gear such as bikes, kayaks, skis, and more while providing 11 cubic feet of additional packing space
- Designed to fit a wide range of vehicles; works with most factory and aftermarket roof racks
- Quick and tool-free PowerClick mounting system "clicks" when roof box is secure and properly mounted - takes less than 5 minutes to install
- Dual-side opening for easy access to all areas of the box, from either side of the vehicle
- Full trunk access with no roof box contact
- Fits 3-5 pairs of skis / 3-4 snowboards (up to 175 cm)
- External dimensions: 74.75 x 24.75 x 16.75 inches
- Internal dimensions: 70.5 x 20.5 x 14.75 inches
- Load capacity: 165 lbs; Product Weight: 32 lbs

- 20Cubic Feet - Carrying capacity - The whole point of the purchase us to provide additional cargo room, so it makes no point to buy one that is not big enough. the roof bag overall size is 51.1'' x 39'' x 17'', Carry 20 cubic feet. Larger than other brand.
- Roof bag fits all cars with or without roof rack,Soft Car Top Carrier - There is no ”Best Soft Car Top Carrier”. Instead, the best one is the one that satisfies your specific needs.However, we provides the best all-around value and is likely to satisfy more consumers. We provides larger capacity ( 20 Cubic ), top PVC material, convenient design and more security.
- Easy Mounting & Storage Design - Design with 6 short tie straps & 2 long straps, make it easy to attaches in only a matter of minutes. Our Carrier is purely malleable, more simple to store than the carrier with stiff inner-lining ( storage bag included ).
- Waterproof - PVC Materials - The torrential downpour will test merely water resistant materials to their limit and likely result in damp or soaked contents. But our car top carrier is coated with PVC to aid in waterproofing ( inside and out ),NOT ONLY WATER RESISTANT like other brand.
- 6 Tough Straps - More Security- Alongside carrying capacity, stability is arguably the most important factor in a car top carrier. We Provide 6pc wide straps & 2pc 3M straps. To some extent, the more straps used to fasten the carrier to the roof the better.

- This car roof box is manufactured from sturdy ABS and PMMA material for long-lasting use and shiny, able to protect your valuables from exposure to the elements and can load 130 lbs capacity, suitable for round, square and most aerodynamic bars.
- It is constructed of rugged, impact-resistant ABS material to ensure a long lasting life in outdoor conditions. More, it can open from the side and stay open till you close it with the strong support arm.
- Overall Dimensions: 55.91" L x 29.53" W x 14.96" H, Capacity: 13 Cubic Feet volume and holds up to 130 lbs
- Opens on the passenger side to 13inches wide to store bulky items from the side and stays open till you close it, and it is very easy to install without any tool required to assembly.
- Double side opening for easy loading and unloading,Key can only be removed when all locking points are securely closed

- 22 cu.ft / 562 L Capacity: The rooftop cargo box maximizes roof space, providing extra spacious storage. It supports a max load of 165 lbs and includes two straps to securely fasten items inside, meeting diverse storage needs.
- Compatible with Various Crossbars: Fits crossbar installation center distances of 20.8-40.5 inch / 529-1028 mm. Includes complete installation tools, no drilling required. Features bottom metal bars for enhanced stability.
- Dual Opening & Dual Locking: Equipped with anti-theft locking devices on both sides, allowing access from either side. Six locking points enhance security, while sturdy support arms keep the box open until closed for convenient access.
- Upgraded Thickened ABS Shell: Enhanced thick ABS material offers impact resistance, waterproof, rust-resistant, and heat-resistant properties. Suitable for outdoor use in various weather conditions, it withstands bumps and prolonged use without damage or deformation.
- Reduced Wind Resistance and Noise: Streamlined aerodynamic design reduces drag and wind noise, ensuring a smoother driving experience.
Last Update : 2025-07-18