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Replacement U-Bolt for Thule Sidekick Cargo Box

Replacement U-Bolt for Thule Sidekick Cargo Box

Item # TH02943
Our Price: $6.35
You Save: 7%
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Shipping Weight: 0.07 lbs
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  • Reviews (261)
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  • Videos (1)
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Thule Accessories and Parts - TH02943

  • Roof Box
  • Hardware
  • Thule


  • Replacement U-Bolt for Thule Sidekick Rooftop Cargo Carrier
  • Also fits Thule Aero XL Cargo Box and Karrite Voyager Cargo Box
  • Size: 6mm (M6)
  • Qty. 1 U-bolt

1500056955 Thule Replacement U-Bolt

Replaces 02943

Video of Replacement U-Bolt for Thule Sidekick Cargo Box

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Thule Replacement Sidekick Cargo Box U-Bolt - TH02943

Hi there, I'm Michael with Today we're gonna take a quick look at this Thule replacement U-bolt. This is going to replace the U-bolt for your Thule sidekick rooftop cargo carrier. This will also work as a replacement for the Thule Arrow XL cargo box and the Karrite Voyager cargo box. So if you are needing to replace a U-bolt for any of those, this is going to do a great job for you. It is a six millimeter or six M bolt here.

Just to give you a few measurements, you can see it is right about four and a quarter of an inch, in our width. In our height, we're looking at approximately two and a quarter of an inch. Because this is a direct replacement from Thule, you can trust it is going to work for your sidekick cargo carrier. You're not gonna have to worry about fit issues or compatibility problems, will fit right in place of the original and it is also gonna work for the Arrow and Voyager cargo boxes as well. That completes our look for today.

Again, I'm Michael with Thank you for watching.

Customer Satisfaction Score:

Customer Reviews

Replacement U-Bolt for Thule Sidekick Cargo Box - TH02943

Average Customer Rating:  4.9 out of 5 stars   (261 Customer Reviews)


U-Brackets are a vast improvement over stock keyhole-slip anchors. The stock anchors are unwieldy, confusing, and installation has to be re-learned every time you use them. Using the U-Brackets on a "Sears Sport 20" cargo carrier, which I think was actually made for Sears by Thule.


The U-bolt fits my weekender 627 perfectly saves me a ton of time installing my Thule.



Still works like a gem.


Perfect bolts for a Sears 20-SV/SportRac rooftop box. I feel much safer using these U-Bolts than I do the sliding brackets. Thankfully I found these just in time for a 900 mile family trip. Worth every penny for the peace of mind.


Awesome! Would recommend for any replacement parts or hardware for traveling accessories


These U-bolts are replacing the obnoxious mounting system that was provided with a model year 2015, X-Cargo Extreme, rooftop carrier.

I was slightly concerned with the inside stud spacing of this item, however it worked perfect. The hole spacing on the plastic carrier, exterior bottom support steel plate, and interior steel hold-down plate, are all of a slightly larger diameter, allowing this item to slide in. The minimal resistance provided by the bolt rubbing the insides of the hardware, is just enough to keep the u-bolt in place while you tighten down the spinners inside the carrier.

These bolts are being used on a 2015 Jeep Grand Cherokee, fitted with Mopar's factory style, airplane wing shaped, cross bars. ( They're relatively thin, as a thicker dimension bar might run out of stud length on the U-bolt uprights. )

etrailer should be commended for providing their customers a cost effective route, for simplified mounting.



An update on the etrailer u-bolts, for my x-cargo Thule style rooftop carrier. I have now used these replacement u-bolts multiple times, covering many thousands of miles. Theyre still working great! There are no issues with wear to the carrier or the Mopar aluminum cross bars, nor issues from rust or corrosion. They have been used on the beach in the ocean air, to the freezing North-East salt sprayed winter roads. Note: I did rub candle wax on the threaded studs to avoid freezing, in the cold My garage door height will not accommodate my vehicle with the rooftop mounted carrier, resulting in the carrier being taken on and off, quite a bit. That being noted, the threads on the u-bolt studs have held up well, with no cross threading or stripped areas. I would not hesitate to recommend this part to replace X-cargos terribly designed stock mounting system or another wide u-bolt design that has become damaged. Super cost effective alternative to other mounting systems!


Item matched item description.





Great product, held up well on all of my roadtrip this year. Very grateful to have found someone who sells parts!


Parts as advertised. direct replacement for aging Sears X-Cargo Sport u-bolts


I was searching for replacement brackets for my SportRack rooftop cargo box I purchased through [store] more than five years ago. I couldn’t find replacement parts—it appears [store] doesn’t sell parts anymore. When searching for the part numbers, I came across identical part numbers for a Thule rooftop cargo box. The only difference was that these part numbers had a “TH” in front of them. Just received the parts yesterday and confirmed they are the exact thing I needed, so I’m very happy I purchased from here.


exactly what needed, thanks!


Just what I needed to mount my cargo bo x!


I misplaced a specialized u-bolt for my Thule cargo box. After finding that I needed to purchase the entire hardware "kit" from Thule for $50 in order to get a $2 replacement piece of hardware, I instead contacted and got the u-bolt I needed in a timely manner for a couple of dollars. Customer service and follow-up for a simple piece of hardware was exceptional. Good people to do business with.

Mark S.


The cargo carrier with the replacement U-bolt have logged about 5000 miles with no issues.


I bought this along with "Replacement 3-Wing, Low M6 Hand Knob for Thule Roof Mounted Kayak Carriers - 753-0783" for my Mondial Car-Go 320. I simply had to drill new holes at 4" apart and now I will be able to install and remove the carrier with much more ease than the nuts and bolts I had to use before. Just had to do a little research on the sizing to make sure I go the correct parts. This should work great!



Dan H, how did this go for you? We have to drill new holes in our carrier and want to make sure we do it safely. thanks!Q

Dan H.


Lori - It went great. They are so much easier to use than the brackets we previously had. Makes putting the carrier on and take it off much easier and takes half the time.


I received a damaged envelope type package that only had three of the U bolts, the fourth must have slipped out somewhere on the way. I emailed etrailer on a Sunday and received a same day promise to ship out the missing U bolt. It arrived in a box instead of an envelope like the first shipment. It was stuffed with packaging and the box was taped up very well. They obviously wanted to make sure the bolt wasn’t lost in the mail again and I appreciate it. I’m very happy with the customer service and will order from them again.



I got an email from etrailer asking for a followup on the last day of a trip from Houston to New York and back and the U-bolts held up perfectly. I didn’t have to tighten or adjust them at all for the entire trip and I never took the cargo shell off the roof for my 2 week stay so there was a mix of highway and in-town driving. These are great parts and etrailer has always had excellent customer service in my experience.


Exact replacement for the mounting bracket I needed for my Sears XL Cargo rooftop carrier. The measurements provided on the Q&A section about the bracket were exactly correct and dispelled any concerns I had.



Yes. I’ve used it numerous times since buying the bracket and it has performed great.


Exactly what I needed to make my old box fit new bars


Looking for replacement for about a year, this was the exact one.


I have lost the item, so I found the website where specific item what we need this at most.


It was the wrong part and difficult to compare old thule parts to this company's newer non brand replacement parts. Sent back a different shipment of parts that did not work and had to prove they received my return with ups shipping confirmation to be refunded. Not too impressed with this company.


Somehow, one of the Ubolts for my cartop carrier had went missing when we were to install it on my Sons Minivan for his vacation. I ordered hoping it would 1) arrive in time and 2) fit my cartop. It arrived in a few days and was identical to the missing Ubolt. Thanks Etrailer!

Doc R.




I bought these to replace the ones on my old Thule sidekick. After leaving the original ones inside the carrier in storage they became so rusted I could no longer thread the wingnuts on. Fortunately Thule still makes these replacement parts and etrailer not only carries them, but shipped them the same day. I had the replacement parts with plenty of time to spare before my trip. I now store the hardware in my basement instead of the shed and they show no signs of rusting anytime soon a year later.


After losing a u-bolt from my Thule cargo box, I attempted to contact the company to acquire another one. I had to open two warranty sites to get on their replacement list. Long story short, I googled your company and within a week, the perfect sized u-bolt is here! Fantastic service, great price, fast delivery…thank you!


I received this promptly and it was the perfect fit. Grateful to find a source for this product, and so cheap! I had been missing my fourth bracket for a year, and just zip tying the fourth corner of the cargo carrier to the luggage rack. NEedless to say, that was getting old. Note that while this was said to be for a Thule carrier, I actually am using it on a cargo carrier I got at Sears about 6 years ago, called the X-Cargo Sport 20. Description Item # 02872030000P Model # 90035P on the Sears website.


These bolts fit the SportsRack Vista XL cargo box. So if you happen to drive into your garage with your cargo box on and you don't fit, and need to cut the bolts to get the box off... They make the perfect replacement part! I ordered on Sunday and they arrived on Wednesday with 2 day shipping. So the parts made it in time to save our trip!


Product shipped and received quickly. It was as described in the description when I bought it online. Very happy with the experience with I'll order again if I need them.

Ray O.


Worked and working great with no issues.

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Info for this part was:

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Employee Michael H
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