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Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin

Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin

Item # TH6357B
Our Price: $749.95
You Save: $406.03
Roof Box
This item qualifies for Free Truck Freight Shipping
Shipping Weight: 44 lbs
In Stock
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74-3/4 x 33 x 18. This aerodynamic, low-profile cargo box holds small bags and carry-on luggage for up to 4 people. Built-in Quick-Grip clamps let you quickly mount the box to your roof rack, and the locking lid opens from both sides. Great Prices for the best roof box from Thule. Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin part number TH6357B can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (217)
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  • Why etrailer?

Thule Roof Box - TH6357B

  • Aero Bars
  • Factory Bars
  • Square Bars
  • Round Bars
  • Elliptical Bars
  • Large Capacity
  • Thule
  • Medium Length
  • Black
  • Dual Side Access
  • High Profile

74-3/4 x 33 x 18. This aerodynamic, low-profile cargo box holds small bags and carry-on luggage for up to 4 people. Built-in Quick-Grip clamps let you quickly mount the box to your roof rack, and the locking lid opens from both sides.


  • Low-profile, roof-mounted cargo box provides enclosed storage for your gear
    • Perfect for groceries, gardening tools, small duffel bags, or carry-on luggage for up to 4 people
    • Great for sedans and crossovers
  • Pre-installed Quick-Grip mounting clamps provide 5-minute installation on your crossbars
    • Simply turn dials to secure mounting clamps to roof rack
    • Integrated PowerClick torque indicator clicks when clamps are properly tightened
  • Aerodynamic shape helps to reduce drag and wind noise
  • Dual-side-opening lid lets you load and unload gear from either side of your vehicle
    • Hand knob on lock makes lid easy to lift and close
  • Oversize SecureLocks ensure that lid is closed and locked
    • Key can only be removed when box is properly closed and locked
    • 2 Thule One-Key System locks included
  • 2 Load straps connect to built-in anchor points on Quick-Grip hardware to secure your gear
  • Rugged ABS plastic construction resists impacts, weather and harsh UV rays
  • Black AeroSkin diamond-texture lid and base looks stylish on your roof
  • Made in the USA


  • Application: round, square, aero, elliptical, and most factory crossbars
  • Maximum crossbar dimensions: 3-1/2" wide x 1-11/16" tall
  • Crossbar spread: 23-5/8" - 36-1/8"
  • Carrying capacity: 16 cu ft
  • Ski/snowboard capacity: 5-7 pairs of skis or 3-5 snowboards
  • Maximum ski length: 189 cm
  • Dimensions: 74-3/4" long x 33" wide x 18" tall
  • Front clearance: 47-1/2"
  • Box weight: 41 lbs
  • Limited lifetime warranty

Cargo Box Clearance Dimensions

635701 Thule Force XT Large Roof Mounted Cargo Carrier - 16 cu ft - Black AeroSkin

Replaces Thule TH6357B

Customer Satisfaction Score:

Customer Reviews

Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin - TH6357B

Average Customer Rating:  4.8 out of 5 stars   (217 Customer Reviews)

74-3/4 x 33 x 18. This aerodynamic, low-profile cargo box holds small bags and carry-on luggage for up to 4 people. Built-in Quick-Grip clamps let you quickly mount the box to your roof rack, and the locking lid opens from both sides.


Purchased for my 2007 Touareg which has factory raised rails.
The Thule Force XT L fits perfectly! Very nice and sturdy. Requires 2 people to lift it up onto the crossbars, but just 1 person can secure it after that. I used the Malone AirFlow 2 crossbars. Installing the Thule Force XT L took about 5 minutes which included time spent measuring to get it centered. Very easy!
There is a lot of cargo room - 16 cubic feet - and access from either side of the vehicle. The 2 doors open easily (but you can only have 1 open at a time.). There is a limit of about 12-inches for the opening which is important to note for items you plan to put in. There are tie downs installed and adjustable straps were included to keep items from sliding around.
I have not noticed any wind noise and am able to open and close my sunroof and rear hatch easily.
The only down-side to this Thule Force XT L is that it needs to be taken off before going to a car wash. I normally have my Touareg washed every week so this is going to be a challenge.
Purchased the Thule Force XT L on sale so I think I received a good value. The freight shipping took a while for delivery but tracking the process was easy. The Thule Force XT L instruction book shows to store it flat NOT on end so I was surprised that it was shipped on end inside a cardboard box (with no cushioning or packing materials) and shrink-wrapped onto a pallet. The 2 keys were taped to the side of the cargo box and the package with instructions and straps was unsecured inside the cargo box.


Took awhile to get this with backorders. After a cross country trip last fall I feel it was worth the wait. etrailer staff were very helpful on the return/reorder as the first time I ordered the wrong size. I'm way to OCD to own the Thule black SHINY cargo box. -It will show every scratch.. This textured matt black finish blends in very well with my trucks bed cover. In real world performance this unit shows little road dirt especially behind the truck body. With a good UV ray cleaning maintenance schedule the finish should hold up for many years. Some complain about the lock system but if you read the directions and slow down it works well. If in the picture you notice a third Rhino center rail ( from etrailer ) this is for better support of the bikes and the Thule. WELL worth the load safety.


The box is great, kept everything dry. No noise or rattle. Dont skimp out on a good set of rack bars. Easy install. Made it 3000 miles up the AlCan highway.


Prefect fit cargo box for 19 subaru outback. Customer service is amazing to work with and helpful on products.


etrailer stocking and shipping got it to me in about 5 weeks, beat original estimated timeline. Tracking info right on, projected delivery date met. I am mounting the THULE Force XT L Rooftop Cargo Box to a full length PRINSCU roof rack on a 2020 Toyota 4Runner. Had to remove 2 of the crossbars to allow for the floor of the box to sit flush onto the rails. Once done, used the THULE quick clamps around the 2"x1" bars and installation completed!


I really like this box. I have used it on many trips. There is a slight increase in wind noise while driving. I built my own cross bars for clamping it to the roof. I made them very low so the box fits close to the roof. I am surprised how water tight it is. It is big, I am barely able to get it on and off by myself. The clamps work great for holding the box in place, but they do pop out of their holding spots when they are not clamped down. I think it’s designed that way so they don’t break when storing or handling the box. Would be nice if there were handles on it like a suitcase handle to make it easier for one person to carry it and move it.

It has worked great. Little to no additional wind noise. I drove all day in a rain storm, I expected a lot of water inside the carrier, but found only a tablespoon or so of water. The clamps hold tight.
James - 01/16/2022


Great roof box for my 2019 Rav4 Hybrid. I've taken a couple of trips with it so far and have had no issues!

After a year it has still been a great investment. We have used it on several trips. And Im able to install it by myself in just a few minutes.
Jeff - 10/05/2022


Order process and delivery: Excellent! Took a few weeks to get to me, but perfectly understandable as many places, including Thule's own website, was out of stock for a number of weeks and even months. Delivery was simple, box was intact and product came out perfectly protected and new!

The box itself is very sturdy, looks great, and has plenty of room for whatever you want to put in it. Changing out the locks to the one-key system was relatively simple, and I can't wait to take our first family trip with it. Highly recommended!


Free freight delivery right to our driveway! My 18 yo son installed it on the roof in 10 minutes. Looks great. Can’t wait for our trip. etrailer was great with ordering and shipment updates.


So far I love this box. It has tons of storage and other than it being heavy it’s super easy to install and remove from the car. I only wish it had handles or something to carry it after removing it.

Still very happy with the box and use it all of the time.
Arron - 07/28/2022


Easy to get onto our Subaru Crosstrek by myself, and this thing is box is a clown car -whenever you think its full, you can get more in there. Excellent customer service from etrailer, would purchase from them again in a flash


This box has been great. We used it for ski equipment in the winter, camping gear in the summer, and other odd shaped objects throughout the year. It is very easy to take on and off the roof which has been a big plus.


I love it! A great purchase. It arrived within a week with no damages. It's definitely an investment piece. If you do a lot of traveling and need more space in the car, this will give you that! The Large fits my 2022 Toyota Corolla Cross perfectly.


Awesome Thule carrier at a good price, quick shipping and great service!


E-Trailer was excellent, easy process, great price on a hard to find item, fast shipping. Would definitely shop E-Trailer again.


The Thule Force arrived in great shape and was exactly as described. The etrailer team answered all my questions quickly. It’ll make our road trips much easier. One negative that isn’t related to etrailer or Thule…the shipping of the product to my house didn’t go as planned. It was a day later than scheduled and the truck was too big for a residential neighborhood. I had to meet the driver in a convenience store parking lot and drive home with the box hanging out of the back of my car.


A lot more cargo space!
Fit my Yakima
jet stream bars.


Fast, easy service. Product arrived ahead of schedule.


I am extremely pleased with my shopping experience with Etrailer. The website helped me choose the proper cargo box to fit my 2018 Honda CRV which I verified with an associate when placing the order. The website also gave me access to a video showing how to install the cargo box. When the item arrived I noticed that the list price had dropped $160 from the purchase date. They gladly rebated the price to reflect the discounted price as part of their "lowest price guarantee". Etrailer did everything possible to satisfy my shopping needs.


Customer service was fantastic! Everything shipped and arrived ahead of schedule.


My second Thule Cargo Box. My first was a more basic model. I really like the advancements on this one.


It arrived a little later than it was supposed too, but that was because the shipping company put the wrong box on the truck the first time. When it arrived, it was exactly as it was supposed to be. This was a hard product to find in stores, so I was thankful that etrailer had it and that they also shipped it for free! The free shipping was huge, because other places were charging a lot because the item is so large. Excellent service, I would highly recommend!


Easy to install. I’ve only used it on one trip, but functioning very well so far.


Exactly what I needed. Fix so much stuff in it. Easy to install. Love it!


Good price and very helpful when u call to check on your order

Show More Reviews

See what our Experts say about this Thule Roof Box

  • Fit Information For Thule Force XT Rooftop Cargo Box
    it looks like you are interested in the Thule Force XT Rooftop Cargo Box, part # TH6357B. This cargo box features 16 cu ft of cargo space and has an aerodynamic shape to help reduce wind drag and noise. This box also features dual-side opening so you can access the cargo box from either side of the vehicle. This cargo box internal dimensions are 70-inches long, 28-3/4-inches wide, and 16-1/4-inches tall, and has a weight capacity of 165 lbs. I have attached a drawing that shows the clearance...
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  • Will Thule Force L Cargo Box Clear Antenna of 2013 Mazda CX-5
    If your shark fin antenna sticks up higher than your crossbars you will need to take one measurement to determine if the Thule Force L part # TH6357B will clear it. You will need to measure from the center of the front crossbar back to the antenna. If that dimension is more than 47-1/2 inches the box will clear it. Thule lists this box as a fit for your 2013 Mazda CX-5 also.
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  • Recommendation for a Cargo Carrier to fit a 2017 Hyundai Santa Fe
    The best size cargo carrier for your 2017 Hyundai Santa Fe would be one that will fit the roof of your vehicle, offer you enough capacity to carry the cargo you need, and not interfere with the operation of your vehicle's rear hatch. The Thule Force XT Rooftop Cargo Box, # TH6357B, is a cargo carrier that has a 16 cubic feet cargo capacity and has the Thule Quick-Grip that allows you to install to the carrier to your roof rack quickly. To make sure that this Thule cargo box or others...
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  • Cargo Box Recommendation that Allows Rear Hatch of 2017 Subaru Outback to Open
    What I need from you is the "front clearance" dimension. This is the distance from the front crossbar of your roof rack back to the rear hatch seam on the vehicle. With that we can pick out the best fitting roof box that will allow you to open the hatch. For a 2011 Outback we know this dimension is 51 inches but we don't have that measurement yet for a 2017. If your dimension is the same you would want to go with a box like the Thule Force L part # TH6357B which has front clearance of...
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  • Does Thule Force L Cargo Box Fit 2017 Hyundai Santa Fe with Thule Roof Rack Installed
    I checked with Thule and their Force L Cargo Box part # TH6357B is a fit for all of their roof racks that fit your 2017 Hyundai Santa Fe so this would be a great option for you that would fit well.
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  • Fitting the Thule Force XT on a 2017 Land Rover Range Rover Sport
    The Thule Force XT, part # TH6357B is compatible with spreads of 23-5/8 Inches to 33 inches, and your 27 inch spread will be a good fit for this box. Prior to purchase, you'll want to measure the distance from the center of the front crossbar to the line where your rear hatch meets your roof. You will need this distance to be longer than 47-1/2 inches if you want to be able to fully use your rear hatch while the box is installed.
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  • Would the Thule Force L Cargo Box fit Factory Crossbars of a 2016 Buick Enclave
    I checked with Thule and they list the Thule Force L part # TH6357B as a confirmed fit for the factory crossbars of your 2016 Buick Enclave. Most likely this would allow you to open the rear hatch without issue, but you can take one simple measurement to know for sure. Slide the front crossbar all the way forward and measure from it's center to the hatch seam. If that distance is greater than 47-1/2 inches the hatch would open with this cargo box without any interference.
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  • Thule Force L Cargo Box TH6357B Weight Capacity
    As long as you stay under the weight capacities of every item in your setup you will be just fine from a weight capacity standpoint. The Thule Force part # TH6357B has a 110 lb capacity. If the cargo in the box stays under that and then you stay under 165 total for the rack you would be fine. You might also check the owners manual of your vehicle to determine what the roof of the vehicle is rated for as well.
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  • Roof Cargo Box Recommendation for 2011 Subaru Outback that Allows Rear Hatch Door to Open
    Thanks for getting me the front clearance measurement of your Subaru Outback. However, the Skybox 18 requires 57 inches of front clearance to allow the rear hatch to open. So you would want to go with a box like the Thule Force L part # TH6357B which has front clearance of 47-1/2 inches which would easily fit.
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  • Lock Removal Tips for Thule Force L Cargo Box
    What you'll need to do is insert the key and then use a small flat screwdriver (or any tool similar) to allow you to pry up gently on the lock core to get it to release.
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  • Compatibility of the Thule Force Large Rooftop Cargo Carrier on a 2012 Toyota 4Runner
    Both the Thule Force XT Rooftop Cargo Box, # TH6357B, and the Force XT Sport Cargo Box, # TH6356B, can fit the roof rack of a 2012 Toyota 4Runner. There are just a few measurements you will need to be certain these cargo boxes will fit. First, the crossbar spread of your 4Runner will need to be measured. The measurement needed will be from the center of one cross bar to the center of the other crossbar. For the Thule Force XT box to fit your crossbars spread must be at least 23-5/8 inches...
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  • Roof Cargo Box Fit for Thule Force L on 2013 Audi A4 Sedan with Factory Crossbars
    I checked with Thule and the Thule Force L part # TH6357B that you referenced is a confirmed fit for the factory crossbars of your 2013 Audi A4 Sedan. This will fit and work very well for you. Thule offers square bar roof rack just like what you have so this was partially designed for that shape of bar.
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  • Will Thule Force XT Roof Box Allow Rear Hatch To Open On 2011 Toyota Prius
    There is a quick measurement you can take to see if the Thule Force XT, part # TH6357B will work on your 2011 Prius. You will need to measure from the center of the front crossbar rearward to the seam that separates the roof and the rear hatch. The TH6357B requires 47-1/2 inches to allow the rear hatch to open. As far as being able to see it when looking through the front windshield it will not impede your view when driving but if you lean forward there is a very good chance you will...
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  • Maximum Weight Capacity of Thule Force XT L Rooftop Cargo Box
    I checked with Thule for you and was able to confirm that the maximum weight capacity is 165 lbs for the Thule cargo box you asked about, which is the following part: - Thule Force XT L # Rooftop Cargo Box TH6357B You made a really nice choice with the Force XT, because it is not only spacious and quiet, it is also really easy to use. The box has a lid that opens from either side to make it easy to access, and once you open the lid, it stays open until you choose to close it, so you aren't...
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  • Will the Thule Force XT Rooftop Cargo Box Fit Factory Crossbars On a VW Golf Sportwagon
    I checked with Thule and the Thule Force XT Rooftop Cargo Box part # TH6357B is a confirmed fit for a 2019 Volkswagen Golf SportWagen with the factory roof rack.
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  • Can I Re-Position the Clamps Inside a Thule Motion XT?
    I'm not completely familiar with the factory roof racks that came on Honda vehicles, but you may not be able to adjust the crossbars; you'll want to have a look at where they are mounted on the raised side rails and see if there is some sort of screw that can be unscrewed and would allow you to reposition them to your desired spots. If you find out that you're not able to move them around and you're stuck with the factory install points on the roof rack, there is still a way to work around...
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  • Roof Cargo Box Recommendation for a 2016 Kia Sorento
    There are actually a lot of different cargo boxes that are compatible with your 2016 Kia Sorento so the list would be pretty extensive. If I had to choose one option I recommend the Thule Force XT Rooftop Cargo Box # TH6357B which is a 16 cu ft box with a Black AeroSkin finish. This box is really easy to install and use plus the dual-side access means you can load/unload cargo from the driver or passenger side of your Sorento depending on where you are parked. Attached is a link to a...
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  • Will Rola Roof Rack 59767 For 2015 Mazda CX-5 Carry Thule Force L XT Cargo Box
    The Rola roof rack 59767 that you referenced is a fit for your 2015 Mazda CX-5 and would work well with the Thule Force L XT # TH6357B that you are wanting to carry. This cargo box is perfectly compatible with the Rola roof rack and will work great with it.
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  • Roof Box Compatibility with 2019 Honda CRV with Factory Crossbars
    There are many roof box options that will fit on top of your 2019 Honda CRV. For best fit, there are a couple things to consider. You will need to consider the width of the actual crossbar to ensure the mounts on the box will work, you will need to consider the crossbar spacing to ensure the load can be supported correctly, and then you will also need to consider the rear hatch clearance so you can get into your rear cargo area when the box is installed. I've attached an article to assist. Next...
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    Image 1 for
  • Is The Thule Force XT L Roof Box Compatible With A 2019 Honda Passport With Factory Rails?
    As long as the cross bar spread on your 2019 Honda Passport is between 23-5/8" and 33", the Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin Item # TH6357B is compatible. I have confirmed through Thule's fit guide that this roof box does fit your vehicle. This roof box is compatible with just about any crossbar because it clamps around the bar. The spread would be the only concern.
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  • Thule Force XT Cargo Box That Fits 2014 Ford Escape
    I checked with Thule, and the Thule Force XT cargo box which will fit your Ford Escape is the Thule Force XT L Rooftop Cargo Box # TH6357B. The Force XT is a great option for a cargo box because of how easy it is to use and install while also providing a ton of cargo space, and a quiet ride due to its aerodynamic shape that will slice through the wind. Installing it on your roof rack is super easy; the Force XT simply uses a clamp that grips the sides of your crossbars. You will know...
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  • Is Thule Force XT Roof Cargo Box Rainproof
    In order for something to be waterproof it needs to be able to be submerged and not let any water in. What the Thule Force L # TH6357B is considered is "weatherproof" which means that it has a seal that does an excellent job keeping moisture out from rain or snow. We've had a couple customers come back and say that this box did a great job in heavy rain and winds so I would confidently say that this will keep your cargo dry. But if it's something that will get damaged if it gets wet I...
    view full answer...
    Image 1 for
  • Will Thule Force Large Rooftop Cargo Box Interfere With Hatch Opening on 2017 Honda Pilot?
    In order to determine if the Thule Force XT Rooftop Cargo Box # TH6357B will interfere with the opening of the hatch on your 2017 Honda Pilot you only need to take a quick measurement from the center of your front crossbar to the seam where your hatch opens. If you have at least 47-1/2 inches then the Force XT will not interfere with the opening of the hatch.
    view full answer...
    Image 1 for
  • How to Determine if Thule Force Roof Cargo Box Will Allow Vehicle to Open Rear Hatch
    I can certainly help you pick out the biggest roof cargo box that fits your 2017 Kia Sorento with factory crossbars but I'll need to know the distance from the center of the front crossbar back to the rear hatch seam to do that. For example the Thule Force Large # TH6357B requires 47-1/2 inches of distance there as a minimum. The XXL # TH626 requires 58-1/8 inches.
    view full answer...

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Info for this part was:

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Video Edited:
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