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Thule Sidekick Roof Mounted Cargo Carrier Box - U-Bolt Mounts - 8 Cubic Feet

Thule Sidekick Roof Mounted Cargo Carrier Box - U-Bolt Mounts - 8 Cubic Feet

Item # TH78GC
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Our Price: $379.95
Roof Box
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Shipping Weight: 21 lbs
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54 x 25 x 15. Roof box mounts to your crossbars with U-bolts and reinforcement plates. Locking lid opens from the passenger's side of your vehicle. Great for carrying luggage, groceries, and other gear. Impact-resistant polyethylene construction. Lowest Prices for the best roof box from Thule. Thule Sidekick Roof Mounted Cargo Carrier Box - U-Bolt Mounts - 8 Cubic Feet part number TH78GC can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (4)
  • Q & A (0)
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  • Why etrailer?

Thule Roof Box - TH78GC

  • Aero Bars
  • Elliptical Bars
  • Factory Bars
  • Round Bars
  • Square Bars
  • Extra Small Capacity
  • Thule
  • Black
  • Short Length
  • Passenger Side Access
  • Medium Profile

54 x 25 x 15. Roof box mounts to your crossbars with U-bolts and reinforcement plates. Locking lid opens from the passenger's side of your vehicle. Great for carrying luggage, groceries, and other gear. Impact-resistant polyethylene construction.


Features:

  • Cargo box mounts on your vehicle's roof rack to provide enclosed storage for your gear
  • Lid opens from the passenger's side for safety and convenience
  • Included lock helps deter theft
  • Aerodynamic design reduces wind resistance
  • Impact resistant, polyethylene construction ensures durability
  • Weather-resistant design helps keep cargo dry
  • Attaches to crossbars with included U-bolts with reinforcement plates


Specs:

  • Application: round, square, aero, elliptical, and most factory crossbars
    • Maximum crossbar diameter: 3-3/4"
    • Crossbar spread: 23-5/8" - 28"
  • Carrying capacity: 8 cu ft
    • Height above crossbars: 15-1/2"
  • Weight capacity: 75 lbs
  • Dimensions:
    • External: 54" long x 25" wide x 15-1/2" high
    • Internal: 48" long x 23" wide x 13-1/2" high
  • Weight: 20 lbs
  • Limited lifetime warranty


Sidekick Fit Diagram


682100 Thule Sidekick Roof Mounted Cargo Carrier Box - U-Bolt Mounts - 8 Cubic Feet

Replaces Thule 682






Customer Reviews

Thule Sidekick Roof Mounted Cargo Carrier Box - U-Bolt Mounts - 8 Cubic Feet - TH78GC

Average Customer Rating:  5.0 out of 5 stars   (4 Customer Reviews)

54 x 25 x 15. Roof box mounts to your crossbars with U-bolts and reinforcement plates. Locking lid opens from the passenger's side of your vehicle. Great for carrying luggage, groceries, and other gear. Impact-resistant polyethylene construction.

- TH78GC
by:

This cargo carrier is perfect for our needs. Stacey with etrailer helped with ordering & any questions we had. The topper arrived quickly, we didn’t install immediately waiting on roof rack rails. A week or so later ready to install we noticed a rivet missing on the front lock… took pictures & emailed Stacey. She called back within hours & the next day a replacement was on the way….. We’d give 10 stars for her exceptional Customer Service! Thank you for exceeding our expectations!



- TH78GC
by:

This review is not about the Thule Sidekick I ordered. It is about etrailer. Their prices are very competitive and I received free shipping. I placed my order on a Friday, was promised delivery the following Thursday and my item was delivered two days earlier on Tuesday. I will certainly consider etrailer for future purchases.



- TH78GC
by:

Perfect! Just what we were hoping for.



- TH78GC
by:


4
4

Ask the Experts about this Thule Roof Box



  • How to Determine if Thule Sidekick Cargo Box Will Fit Roof Rack
    You didn't mention the specific model 2015 Toyota that you have but if the bars are between 23-5/8" - 28" and are less than 3-3/4 inches in diameter the Thule Sidekick part # TH78GC will fit it and work well. Dimensions: External: 54" long x 25" wide x 15-1/2" high Internal: 50" long x 23" wide x 13-1/2" high
    view full answer...
  • Reducing Wobbling on a Thule Excursion Roof Top Box
    There are a few things that you can do to ensure a fit, and approach the wobble of your existing box without making a purchase. First, you'll want to make sure that your crossbar kit is spread out as far as the mounting system or crossbars will allow. This will give the roof box a better platform to rest on while driving, and reduce its wobble. Next, when you load the roof box, you'll want to make sure that less of the weight is put into the front of the box, and put more into the middle...
    view full answer...
  • Thule Roof Box for a 2016 Toyota 4Runner with Factory Roof Rack and Crossbars
    I have a solution for you, but unfortunately, neither the Thule Force XXL or the Thule Motion XT will fit the 2016 Toyota 4Runner equipped with factory crossbars and allow you to operate the rear hatch. I instead recommend the Thule Sidekick, part # TH78GC, which is an efficient, easy to use box that will fit the factory bars.
    view full answer...
  • Will Thule Sidekick Fit Roof Rack Installed on 2009 Honda CR-V
    I did receive your picture and I confirmed with Thule that it is not a Thule roof rack that's been installed on your 2009 Honda CR-V. However, the Thule Sidekick # TH78GC may still work for you. To find out for sure you can measure the crossbars. As long as they are no more than 3-3/4 inches wide the Sidekick will fit. It's designed for aero shaped bars like you have. Another good measurement to take is from the center of the front crossbar back to the antenna. You'll need at least...
    view full answer...
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  • Availability of Roof Mounted Cargo Box to Fit Inside a 60 by 50 Inch Cargo Basket
    Given that amount of space you have to work with, I'd recommend going with the Thule Sidekick you looked at, part # TH78GC. The cargo box measures 54 x 25 inches, which would fit nicely in your cargo basket. The basket mounts using U-bolts, so you'd need to make sure that the bottom of the basket has lateral bars for the box to mount to that are between 23-5/8 and 28 inches apart. Width wise, the box would take up about 1/2 the basket leaving about 12 inches of space on either side of the...
    view full answer...
  • Can Thule Sidekick Roof Mounted Cargo Carrier Box be Mounted Offset on Roof Rack
    Yes, you can offset the Thule Sidekick Roof Mounted Cargo Carrier Box # TH78GC as opposed to mounting it directly in the center of the crossbars on your 2021 Kia Telluride. This opens up to the passenger side of the vehicle so I recommend mounting it closer to the passenger side of your vehicle so you aren't having to reach as far to gain access to the inside of the box.
    view full answer...
  • Replacement Side Hinge For Thule Sidekick Roof Mounted Cargo Box
    I spoke to my contact at Thule and they told me the hinge for the Thule Sidekick Cargo Box is not an item that is sold as a separate item. You may want to remove the hinge and take it to a local hardware store. Most stores have door hinges that are very similar and may have just what you are looking for.
    view full answer...
    Image 1 for
  • How to Mount Karrite Voyager Cargo Box to Roof Rack
    The Karrite Voyager was a distant relative to the current Thule Sidekick Cargo Box # TH78GC. The box uses standard U-bolt hardware to attach to roof rack crossbars and tightens down with the included plates and threaded knobs. I have attached the complete installation instructions for the Thule Sidekick that you can take a look at, along with an image that clarfies where each piece of the hardware goes. The process will be identical on your Karrite Voyager.
    view full answer...
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  • Recommended Cargo Box for a 2013 Toyota Highlander with Factory Rack
    I checked with a few of the major cargo box manufactures, Thule/Yakima and only found one compatible option which is the Thule Sidekick Roof Mounted Cargo Carrier Box part # TH78GC. This cargo box has a 8 cu. ft. capacity which is still plenty to free up some space inside the vehicle. It has locks for security and is one of the more cost effective options on the market.
    view full answer...
  • How to Determine if Thule Sidekick will Fit Roof Rack on 2010 Chevy Aveo
    The Thule Sidekick part # TH78GC that you referenced can fit crossbars that are between 23-5/8 inches and 28 inches apart and are less than 3-3/4 inches in diameter. Without knowing more info on your crossbars I can't say for certain if this will work but you can easily measure your roof rack to determine.
    view full answer...
  • Fit of Thule Sidekick Roof Cargo Box on 2013 Subaru Outback w/ Factory Roof Rack Crossbars
    The Thule # TH78GC Sidekick Roof Mounted Cargo Box you mentioned is indeed compatible with the factory roof rack crossbars on your 2013 Subaru Outback. I've confirmed this with Thule for you.
    view full answer...
  • How Does the Thule Sidekick Install on Crossbars
    If you were near St. Louis, MO you could come out and we would be happy to install the # TH78GC for you. It's really not too hard to install. For the most part you would just need to set the box on the crossbars of your vehicle and then run the included u-bolts up around the crossbars and then through the box using the included wing nuts to tighten them. To make it easier to get up high enough to install the box you may be interested in the tire step part # HE4040.
    view full answer...
  • Is the Thule Sidekick Roof Top Cargo Box Waterproof
    The Thule Sidekick Cargo Box # TH78GC is designed in such a way to help keep water from the road and elements out and off of your gear. However, with that being said, it is not waterproof. There's always a chance water can get inside the box and on your things. So if you're carrying something that absolutely cannot get wet I recommend sealing it in some sort of bag and then put it in a cargo box or carrying it inside the vehicle.
    view full answer...
  • Recommendation to Transport 185 cm Skis on 2016 Toyota 4Runner with Factory Roof Rack
    The only roof cargo box we have available that is confirmed to fit the factory crossbars on your 2016 Toyota 4Runner is the Thule Sidekick Roof Mounted Cargo Box # TH78GC. This is likely due to the extremely low profile design for the factory crossbars on this vehicle, as only cargo boxes that use a U-bolt attachment system will fit. This particular cargo box features 8 cubic feet of space and will not be large enough to store your skis. To transport your skis using the factory roof rack...
    view full answer...
  • Thule Roof Cargo Box Recommenation for a 2012 Kia Sportage
    Yes, I checked with Thule and the Thule Sidekick Roof Mounted Cargo Carrier Box # TH78GC that you referenced has been confirmed to fit the factory crossbars of your 2012 Kia Sportage. I attached a review video for this cargo box for you to check out as well.
    view full answer...
  • What are the Dimensions of the Thule Roof Box
    The Thule Sidekick Roof cargo Box, # TH78GC, outer dimension are as shown in the attached pictures. Overall external length is 54 inches and width is 25 inches. The height at its tallest point is 15-1/2 inches. At its shortest point the height is 10 inches and in the middle of the cargo box the measurement is right at 15 inches. The height of the bottom of the lid at the locks are 9-1/2 and 10-1/2 inches tall.
    view full answer...
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  • Cargo Box Recommendation for a 2013 Cadillac SRX Factory Crossbars
    I checked with Thule and they list their Sidekick part # TH78GC as a fit for the factory crossbars of your 2013 Cadillac SRX so it would work well for you.
    view full answer...
  • Small Cargo Box Recommendation for a 2014 Honda Pilot with Factory Crossbars
    I wish I had a solution for you that I could provide that would allow your box to fit the rack of your vehicle, but the only replacement hardware kit I can recommend for the Weekender is part # TH04997 which would be exactly what you already have. The only real solution I could provide would be to upgrade to a new box that can fit the crossbars you have like the Thule Sidekick # TH78GC that has been confirmed to fit your vehicle. Check out the review video I attached as well.
    view full answer...
  • Would the Thule Sidekick Cargo Box fit Factory Crossbars of a 2015 Subaru Outback Wagon
    The Thule Sidekick Cargo Box part # TH78GC that you referenced has been confirmed to fit crossbars that are less than 3-3/4 inches in width and are between 23-5/8" and 32-1/16" apart measured on center. If the crossbars of your 2015 Subaru Outback Wagon are compatible with those dimensions the box would work great for you. Check out the review video I attached for more info.
    view full answer...
  • Replacement Wing Nut Recommendation for a Thule Sidekick Cargo Box
    Yes, the correct replacement wing nut for your Thule Sidekick Cargo Box # TH78GC is the part # TH04877 that you referenced. I confirmed this with my contact at Thule.
    view full answer...
  • Recommended Roof Top Carrier for 2014 Toyota RAV4 XLE
    I am going to assume that your 2014 Toyota RAV4 XLE is already equipped with a roof rack. In order to make a recommendation for a roof top carrier I will need to know the type of crossbars used for your roof rack system, the minimum and maximum crossbar spread, and the front clearance measurement. The front clearance measurement is the distance from the center of the front crossbar (if adjustable, slid as far forward as possible) to the seam between the roof and hatch. The Thule Sidekick,...
    view full answer...
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  • Will the Thule Sidekick Fit on My 2008 Chrysler Pacifica with Factory Roof Rack
    I spoke to my contact at Thule and, the TH78GC Sidekick will most likely mount to your factory roof rack as long as you have two cross bars and they will adjust for the following measurements that are required for mounting the cargo box. The Sidekick needs 23-5/8 inch minimum spacing and 28 inch maximum spacing of cross bars front to back on your vehicle. The sidekick also requires 14-3/8 inch mounting width and 7-1/2 inches of rear clearance. There are four fixed holes for mounting u-bolts...
    view full answer...
  • Compatability of the Thule Sidekick Roof Mounted Cargo Carrier with the 2006 Infinity QX56
    Yes, the Thule Sidekick Roof Mounted Cargo Carrier Box, item # TH78GC, will fit your factory roof rack as long as you have two cross bars, and they will adjust for the following measurements that are required for mounting the cargo box. The Sidekick needs 23-5/8 inch minimum spacing and 28 inch maximum spacing of cross bars front to back on your vehicle. The sidekick also requires 14-3/8 inch mounting width and 7-1/2 inches of rear clearance. There are four fixed holes for mounting u-bolts...
    view full answer...
  • Will Thule Sidekick Roof Mounted Cargo Box fit a 2006 Dodge Dakota
    You will need a roof rack on the truck for the Thule Sidekick Roof Mounted Cargo Box to attach to. I have added links to roof rack packages for both the 2006 Dakota Extended Cab and Quad Cab. Once you have the roof rack on the truck, then you could use the Thule Sidekick. Roof mounted cargo boxes need a roof rack with cross bars so they have something to attach to.
    view full answer...


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Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video Edited:
Chris R
Employee Matthew S
Written by:
Matthew S
Employee Daron K
Edited by:
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Video by:
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