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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

Our Price: $773.58
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Shipping Weight: 44 lbs
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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 1-800-940-8924 for expert service.
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  • Reviews (311)
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Thule Roof Box

  • Aero Bars
  • Factory Bars
  • Round Bars
  • Square 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: 175 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

Item # TH6357B

Installation Details TH6357B Installation instructions

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   (311 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.


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.



The Thule is still holding up great! Hardware is still solid. Easy to set on bars and tighten and remove when done using. Probably one the best investments I have ever made.

Etrailer Expert

Mike L.


@Dennis We're happy to hear that your Thule # TH6357B roof box is working well for you!


We love our new Thule Force XT Rooftop Cargo Boxes and can’t wait for our next trip. Opens from both sides, well designed! Recommend you attach the straps before putting it on top of vehicle.


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.


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.


Incredibly useful product! Opening from both sides is an excellent feature. Well constructed and durable. This box holds more cargo than expected, although there are weight limitations to be mindful of. The noise when driving isn’t horrible, just turn the music up and you won’t know it’s there.


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!


Typical well-designed and built Thule product. Got many years out of my first Thule cargo box and I expect the same from this one. etrailer's handling of the order was top notch from start to finish.


Love it. Has more than ample room for storage on a long trip. No problem when in wind or driving 70 plus miles an hour. Has been to Yellowstone, Tennessee, and the Adirondacks. Great travel companion.


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!


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


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.



Weve taken it on a few trips and its great. Perfect fit and no real wind noise at all. I may hav e lost 1 mpg over 1000 miles. My only negative is one of the clamps doesnt ratchet when tight. I havent pursued getting a replacement yet. That would be my fault.


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



After a year the product is holding up exceptionally well, it is easy to put on and take off, we have driven through many rainstorms and everything stays dry. Excellent product, fits perfectly on top of factory cross bars on a 2019 Chevy Traverse. Would definitely recommend this product.


Great purchase - this has made our cross country trips so much easier


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.


great, matte finish and the Large size is perfect for a 2016 Subuaru Crosstrek. Doesn't look egregiously large, but has substantial storage space. The only drawback is that the locking mechanism sometimes has difficulty locking because of all the plastic components, which is annoying, but just requires a little more TLC.


I got this to expand the storage of my 2018 Subaru Crosstrek on road trips and camping trips. It's a great fit on my car. It's super easy to attach and detach from the roof rack - just set it on the crossbars, locate where the clamps should go, then turn the knob on each clamp until the jaws are tight enough. No worries about not tightening enough or over tightening, because the clamps act much like gas caps where they start clicking when the proper clamp force is achieved. I haven't experienced much moisture while using this, but due to the design of the adjustable clamps there is a small chance that water could get into the cargo compartment from the bottom. Another added bonus of this specific cargo carrier with my specific car is that the small diamond haircell texture matches the texture of the black cladding of the Subaru Crosstrek really well. Overall, I am super happy with this purchase with no complaints.


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.


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


Waterproof, holds a lot of gear, and I don’t notice any difference when it is on the roof racks while driving


Cargo is exactly what we wanted, 16 cubic ft enough room for all the our items. Opens from both sides and easy to install. Looking forward to many trips with plenty of room in my vehicle.


Great product. Better in person than I expected. Great customer service in deciding the correct Cargo Box for my needs.


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.


Product was delivered in excellent condition and very well packaged strapped down to its own pallet. I won’t be using it until the end of the month but do not see any issues. Would definitely buy from etrailer again.


Customer service was excellent and shipping was right on time.

I use this cargo holder to transport a large dog crate and a grooming table across the country. I've found this to be more than up to the challenge of not only holding what I need but when mounting and dismounting the carrier. I carry a small stepladder in my car to assist me. It only takes me 5 minutes to mount or dismount this unit from my Outback. Caution...It's a bit awkward to carry this alone into the garage or out to the car due to car the size of the unit, not the weight. Just plan ahead and you'll be ok.


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.

Show More Reviews

See what our Experts say about this Thule Roof Box

  • Rooftop Cargo Box Fit on 2022 Subaru Outback Wagon
    There is a cargo box that does fit your 2022 Subaru Outback Wagon, but the SportRack you mentioned does not fit the crossbar spread you have. What does fit is a box from Thule: - Thule Force XT L Rooftop Cargo Box - 16 cu ft # TH6357B The Force XT L # TH6357B not only fits your Outback, but it's also really high quality, easy to use, and designed with an aerodynamic shape that will slice through the wind to minimize any noise. This cargo box has a lid that opens from either side of your...
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  • Roof Cargo Box that Fits OEM Crossbars of 2014 Impreza Premium and 2020 Crosstrek Sport
    The Thule Force XT roof cargo box part # TH6357B fits the factory crossbars of your 2014 Subaru Impreza and 2020 Subaru Crosstrek and can carry up to 5 snowboards so it would work great for you.
    view full answer...
  • 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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  • Thule Roof Box Recommendation to Fit 2012 Volkswagen Jetta Sportwagen and Clear Hatch
    I'd be more than happy to help you find the right sized roof box for your 2012 Volkswagen Jetta Sportwagen but in order to do so I'll first need to know what the distance is between your front crossbar and the line where the roof and the hatch meet. Sometimes I can find this information online but unfortunately I'm not seeing this measurement for your vehicle. Once we know what this distance is we can then choose the appropriate roof box. For example, the Thule Force XT L Rooftop Cargo...
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  • Does Force XT L Cargo Box Count Towards Rack Capacity
    The Thule Force XT L Rooftop Cargo Box # TH6357B is 18 inches tall, and I'm not sure how to answer if that means high-profile or low-profile. For your second question, I am unable to clarify somebody else's reasonings. Then for the final question, the weight of the # TH6357B cargo box absolutely counts towards the roof and/or roof rack capacity.
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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...
    view full answer...
  • Thule Force XT L Lock / Knob Not Engaging or Freezing
    I will need a little more background information if possible. Were you driving through wet/rainy/snowy conditions? If so what was the approximate outside temperature? I have seen new or used cargo boxes, not just the Thule Force XT L # TH6357B, but others from various manufacturers that will tend to freeze up the locking mechanisms or the release knobs in these wet/colder weather conditions. If that is the case, a light application of a water displacement spray will do the job for many...
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  • Does Thule Force XT L Roof Cargo Box Fit 2021 Subaru Crosstrek With Factory Roof Rack
    I checked directly with Thule for you, and can confirm the Force XT rooftop cargo box will indeed fit the factory crossbars on your 2021 Subaru Crosstrek. The correct part for the XT Large is the following: - Thule Force XT L Rooftop Cargo Box # TH6357B You made a really nice choice here with the Force XT because of how easy it is to use and its aerodynamic shape that will slice through the wind, giving you a quieter ride than other cargo boxes. The Force XT # TH6357B has a lid that...
    view full answer...
  • How to Determine if the Thule Force Large will Clear the Rear Hatch of a Vehicle
    The Thule Force Large cargo box part # TH6357B requires 47-7/8 inches from the center of the front crossbar on a vehicle back to the seam for the rear hatch in order to clear. You will want to take your front crossbar and slide it all the way forward on your vehicle and then measure from the center of the bar to the seam of your hatch. As long as you have at least 47-7/8 inches you would be fine.
    view full answer...
  • 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...
    view full answer...
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  • Does Thule Force XT L Cargo Box Fit OEM Crossbars of 2020 Nissan Rogue
    Yes, I checked with Thule just now and they confirmed that the Thule Force XT L part # TH6357B is a confirmed fit for the factory crossbars of your 2020 Nissan Rogue.
    view full answer...
  • 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.
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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...
    view full answer...
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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...
    view full answer...
  • 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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  • Will a Rooftop Cargo Carrier Allow Rear Hatch to Open on 2015 Jeep Grand Cherokee?
    We can help you get the right rooftop cargo box for your 2015 Jeep Grand Cherokee to ensure the rear hatch will open. In order to do this you would simply need to measure from the center of your front crossbar to the seam where the hatch opens on your '15 Grand Cherokee. For example, if that measurement was at least 47-1/2" then the Thule Force XT # TH6357B would work and allow your rear hatch to open. You can use the accompanying diagram to get the measurements you'd need for the correct...
    view full answer...
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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.
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • What Are The Inner Dimensions Of Thule Force XT L, Will It Fit On My 2017 Toyota RAV4 Factory Rack
    The interior dimensions of the Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin, part # TH6357B, are 70 x 28.75 x 16.25 in. This rooftop cargo box can will also fit the factory roof rack of your 2017 Toyota Rav 4 with access to your rear hatch. Provided that you have at least 11-3/8" between the rear crossbar and the rear edge of this cargo box. Please keep in mind, per Toyota, your factory rack will only have a weight limit of 100 lbs. I have included a video review link below.
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • How Much Height Does the Thule Force XT L Rooftop Cargo Box Add to the Vehicle
    The Thule Force XT L Rooftop Cargo Box part # TH6357B will add 15-1/2" from the top of the crossbars. I can't tell you exactly how tall your vehicle will be with this cargo box installed as there are too many variables on my end but this should be pretty easy for you to determine with the above dimensions.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
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Employee Jameson C
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Employee Tyler C
Edited by:
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Video Edited:
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Employee Chris R
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Employee Colin H
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Updated by:
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