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Replacement Plate Box Support for Adventurer Cargo Box

Replacement Plate Box Support for Adventurer Cargo Box

Item # TH10378
Our Price: $8.88
You Save: 18%
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Shipping Weight: 0.29 lbs
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  • Reviews (74)
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Thule Accessories and Parts - TH10378

  • Roof Box
  • Supports
  • Thule

  • Fits Thule Adventurer Cargo Box
  • Qty. 1 support

10378 Thule Plate Box Support

1500056147 Replacement Plate Box Support for Adventurer Cargo Box

Customer Satisfaction Score:

Customer Reviews

Replacement Plate Box Support for Adventurer Cargo Box - TH10378

Average Customer Rating:  4.9 out of 5 stars   (74 Customer Reviews)


I would order again


First off, etrailer was the only company that gave me any hope of finding a key to fit a Karrite roof box from the early '90s. Thule told me they didn't support the old stuff from a company they acquired, but etrailer responded that there was a good chance the Thule N key of the same number would fit the Karrite lock with a 3 digit code. They were right and I'm back in business. The latches for the explorer box were an exact fit as well. The explorer spring hinges and Adventurer box support plates required some modification to work, but I expected that going in. The only thing that doesn't seem to work is the Thule change key that I added to meet the minimum order for free shipping. The spring hinges are a bit weak for the larger box which likes to distort the lid when it is being opened or closed. They work well at holding the lid open, but I bent one of the arms while closing the lid. At some point I'll reinforce the arms where they are a bit thin near the pivot. Etrailer helped make the old box functional so I didn't have to spend 10x as much for a new one.


I had lost a piece from my cargo hardware that needed to be replaced, your site had all the parts, good pricing, and it was shipped and delivered in a matter of days. I couldn't have asked for a better, overall experience.


Replaced the 15 year old hardware on my Thule Adventurer carton carrier. The kit came with all the hardware including four new flat plates, painted black. The old hardware was starting to rust. Now I am ready for another 15 years.

Fast and accurate delivery by


Product works just fine. Thank you


Great quality item. Has worked well for over a year


Ordered this to replace a missing plate for a used Sears X-Cargo 20 rooftop carrier.
It is an exact match for the originals.


The part was exactly what I needed and arrived in a very timely fashion.


Part perfectly fit my sears cartop carr ier.


Worked well with my Thule Cargo Box, I used this on the underside of my old Thule Cargo Box (15+ years old), because the plastic was starting to get hair line cracks if I tightened the 3-wing hand knob (TH10378) too tight, and I used the plate box support to fix the cracking.


When I bought my minivan used, the sellers included a roof rack with plastic box attachment. Unfortunately, they had lost one of the metal anchor plates. I thought I would need to rig something to use in its place, until I found an identical replacement on etrailer. Thanks for stocking this plate and making my rooftop carrier usable!


I misplaced one of the u-bolts and plates for my X-Cargo Sport 20 rooftop carrier. Jackie from ETrailer was BEYOND helpful with locating the correct parts for my specific model carrier. The price was very reasonable, and the product came within days of my placing the order. I would definitely do business with Etrailer again. It is obvious that they are extremely customer service oriented, and really knowledgeable about all their products.


I needed two different pieces from the mounting system to a used rooftop carrier I purchased locally. Etrailer was the only place that I could find them in stock online. I called Sunday evening just before they closed and I expected them to be rude and annoyed but instead Zack was extremely friendly and patient with me on the phone. He helped me locate the exact items I needed and I was very pleased to learn I could buy just those items instead of the complete system at a much higher cost. Zack did not pressure me to buy more than what I needed and I never felt rushed. I even received an email later that same Sunday evening that my items were packaged and shipping out--they arrived sooner than expected and worked perfectly! Thanks so much Zack and etrailer!


I needed a plate for our car top carrier, only had a week to get it.
Ordered online and had it in 3 days, I cant say enough about etrailer. This way my third time using etrailer.
Parts are always in stock and ship very fast. Thanks again...


I was very impressed with the speed of delivery, and the fact that etrailer had the products I needed for my cartop carrier. The original plates and carriage bolts rusted out, and I was having trouble finding someone who had replacement parts.


bought a second hand thule summit last Sunday that was missing tbe retaining plate. I really needed the carrier for vacation. Summit iz an older model and needed the plate by thurs. etrailer got the brand new plate to me on time by shipping it Sunday. Eternally thankful to them.

product was perfect.


these are unpainted replacement plates just a tad thinner in thickness than the originals that came with our Thule Frontier box. I have no doubts they will be more than fine as a replacement.


These parts were ordered as replacements for a X-CARGO SPORT 20 that I had bought at SEARS.Haven't used them yet but the u-bolts fit the hole pattern in the plates,so I see no problem with them. This was sure less expensive than buying a whole new set at SEARS.


Needed some pieces and parts for a Thule Weekender cargo box. Bought them from because they were about 1/3 less than buying from Thule direct (including s/h)


I just used this again yesterday for travel! I use it to lock in my roof rack. No issues!


Just what I needed to replace a list plate for my Sears x-cargo sport 20 roof top carrier. It’s an exact match.


I ordered a replacement plate box support for my car pod. I was preparing for a trip so it was important that I got the right part quickly. I received the part I needed the next day.


As stated by other previews, this product is slightly thinner than the original and does not come with any sort of finish on it. A quick coat of primer and some padding and it is a solid replacement. Excellent service from


Fast response to questions and quick sh ipping.


Exact replacement mounting plate support I needed for my Sportrack Vista XL.

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