bing tracking image
  1. Accessories and Parts
  2. Thule
  3. Roof Rack
  4. Cargo Control
  5. Load Stops
  6. Thule Load Bars
Thule Load Stops for Load Bars (Qty 4)

Thule Load Stops for Load Bars (Qty 4)

Item # TH503
Our Price: $94.95
You Save: 7%
Accessories and Parts
Orders above $99 qualify for Free Shipping
Shipping Weight: 2 lbs
In Stock
Accessories and Parts TH503 - Thule Load Bars - Thule
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
1-800-940-8924 to order Thule accessories and parts part number TH503 or order online at Free expert support on all Thule products. Great prices and Fastest Shipping for Thule Load Stops for Load Bars (Qty 4). Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (19)
  • Q & A (0)
  • Photos
  • Why etrailer?

Thule Accessories and Parts - TH503

  • Roof Rack
  • Cargo Control
  • Load Stops
  • Thule Load Bars
  • Thule

Thule Load Stops for Load Bars

Vertical stops help organize trips from the hardware store.

  • Laterally supports everything from lumber and ladders to canoes and crates.
  • Straps not included.
  • Mounts to Thule standard square load bars.

503 Thule Load Stops for Load Bars (Qty 4)

Installation Details TH503 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Thule Load Stops for Load Bars (Qty 4) - TH503

Average Customer Rating:  4.8 out of 5 stars   (19 Customer Reviews)


I don’t normally write these reviews, but i really do like They have high quality products that fit and install correctly the first time and their installation videos are the best. In fact, the Toyota dealer i bought my truck from recommended when i wanted to buy a trailer hitch for my Tacoma.


Perfect accessory for securing load on Thule square bars


Found the discontinued Thule items I needed with etrailer! Fast delivery at the right price. First order, but won't be my last. Great service!
Thank you


I needed a set of these so I could carry 10' lengths of 4" PVC on the roof of my Ford Transite Connect van. These are just what I need.
I was happy to see that all I need to do to mount them on the rail is to take the bolt out and slide them down over the cross bar. I thought I was going to have to remove the bar from the roof support and slide the brackets over the end.
I would give them 5 stars if they were a little taller.


Competitive prices and fast delivery!


Fits a Thule rectangular bar perfectly. Arrived quickly.


looks like they will do the job!


Out of box look like they will do the job. Wanted the canoe kit but no longer available for the square tube and did not want the universal kit for the aero blade rack.


Works fine, but doesn't slide very easily along the bars.

Hi Paul, these do fit tightly to the bars. This is to ensure that no matter the size of the load, these will not move and that they will remain secure.
Michael L from - 12/10/2014


Excellent product...easy to use



Good service and good product



The product is great!! Fit is perfect!





Fast and quick



See what our Experts say about this Thule Accessories and Parts

  • Will the Thule # TH503 Load Stop fit on my Thule # TH440 Specialty Railing Mount Roof Crossbars
    Yes, the Thule Specialty Railing Rack with Load Bars # TH440 that you have uses Thule standard square bars and the Thule Load Stops # TH503 that you referenced is designed to fit the standard Thule square bar so it would work.
    view full answer...
  • Availability of Thule Ladder Load Stops for Square Crossbars
    We don't carry Thule England products, but the closest US Thule product to the 548 that we do offer is the part # TH503.
    view full answer...
  • Will Rhino Roof Bar Stops Fit on Thule Square Bars?
    There are some solutions for using load stops with your Thule cross bars, but unfortunately, the Rhino Load Stops are made for use with Rhino Delta Bar Systems and Rhino Modular Racks. Instead I recommend Thule Load Stops # TH503. These are confirmed by Thule to fit any of the Thule square-style roof bars.
    view full answer...
  • Height and Length of Thule Load Bar Stops
    The Thule Load Stops for Load Bars # TH503 are 4" tall and will take up 4" of crossbar space each (see attached photo). I confirmed this with my contact at Thule.
    view full answer...
    Image 1 for
  • Thule Ladder Rack for Thule Roof Rack on Leer Camper
    Typically people use load stops as a way to secure ladders on roof racks. For a load stop that fits Thule square bars we have the # TH503. Then for straps we have the ratchet straps such as # 34413 which can be used to secure the ladders to the bars.
    view full answer...
  • What is Weight Capacity of Thule Artificial Rain Gutters for Roof Rack
    The Thule rain gutters part # TH542 have a weight capacity of 165 lbs for the rack overall including both crossbars but would easily still work since your boat is 126 lbs. For a set of load stops like you are asking for that fit the square bars you'd just need the part # TH503.
    view full answer...
  • Thule Load Stop Replacement Stop
    I have a solution for you, but unfortunately Thule does not offer the load stops as single items, and to replace the Thule load stops, you'll need to purchase part # TH503 which is a four pack. If you're OK with mismatched pairs, Rhino Rack's Load Stops, part # RRRLH2 are similar stops available in a 2 pack that uses a clamp instead of the tightening knob to clamp into the channel of your load bars. Its a tight fit, but they are compatible with Thule AeroBlade and Yakima JetStream bars.
    view full answer...
  • Will Thule TH503 Load Stops Fit 1" x 1" Square Crossbars
    The Thule Load Stops # TH503 were designed to fit the Thule square load bars which measure 1-1/4" wide x 7/8" tall. If the 7/8" height isn't something that will work for your application then the next closest things we have are the Loads Stops # A70770 which are for the 1-1/4" x 1-1/4" square Adarac ladder rack crossbars.
    view full answer...
  • Best Way to Carry Ladders on a 2003 Chevrolet Suburban
    For your 2003 Chevrolet Suburban Z71, I recommend using the Thule Square Load Bars System which is composed of the crossbars part # TH712400 and the mounting feet part # TH710401. This system contains square load bars that are 58" long and have a 165 lbs capacity. However, you will want to rummage through your owner's manual to see if the vehicle's roof capacity is lower. If it is lower than the above crossbars then this is the rating you will need to abide by. In order to secure the ladders...
    view full answer...
  • Replacement Knob/Carriage Bolt for Thule Load Stop TH503
    We do indeed offer the knob you're looking for. It's part # 753-0776-09, which is a confirmed fit for your TH503 load stop.
    view full answer...
  • 2015 Subaru Forester Limited Roof Rack Recommendation for Carrying Ladders
    For your 2015 Subaru Forester that has raised rails that run from front to back the Malone SteelTop Roof Rack part # MPG203 has been confirmed as a fit and would work well for your vehicle. For load stops for the ladders the part # TH503 would be recommended and then for straps # 34413 for ratchet straps. If your ladders will be 20 feet long on the roof of your vehicle you will need to check your local DOT for regulations on carrying an item that long.
    view full answer...
  • Can Erickson Ratcheted Tie-Down Ropes be Used to Secure Lumber on Roof of a 2006 Chevy Malibu Maxx
    I would not recommend a rope tie down such as # 01801 for transporting lumber on the roof of your 2006 Chevy Malibu Maxx. Using ratchet straps such as # EM04418 provides more surface area contact with the wood and you can get them tighter than # 01801. If you were to use # 01801 or something similar I would recommend putting eye bolts in the ends of each piece of wood on each side, running the rope through those, and securing the rope at the front and rear of the vehicle. Then you could...
    view full answer...
  • Length of Threaded Portion of 3-Wing, High Hand Knob with M8 Bolt for Thule Roof Rack Load Stops
    I went out to the warehouse to measure the Replacement 3-Wing, High Hand Knob with M8 Bolt for Thule Roof Rack Load Stops # 753-0776-09 and found it was 1-5/8" long. This part is a fit for the Thule Load Stops for Load Bars # TH503.
    view full answer...
    Image 1 for
  • Size of M8 Bolt in Replacement 3-Wing Nut and Bolt Kit
    I went out to the warehouse and measured this bolt, it is 55mm. This is a direct fit for Thule Load Stops for Load Bars, part # TH503.
    view full answer...
  • Will Thule Load Stops Fit Rhino Rack Euro Square Bars
    Technically yes the Thule Load Stops # TH503 will fit around the Rhino-Rack Euro Bar Crossbars, like part # RREB126B, but please note that the Euro bars are slightly smaller than the Thule SquareBars (1-1/4" wide x 7/8" tall), like part # TH712500, so there is some play once they are installed. The next best option would be to replace your Euro bars with Thule SquareBars so that the load stops fit properly. If you let me know the year/make/model of your vehicle I can let you know what...
    view full answer...
  • Which Thule Square Bar Roof Rack System Fits 2018 Toyota RAV4?
    Yes the 50" Thule SquareBar Evo Crossbars # TH712300 and Evo Raised Rail Feet for Thule Crossbars # TH710401 are exactly what you need to add to your 2018 Toyota RAV4 as long as you have the factory raised rails running front to back. These crossbars will allow you to use your Thule Load Stops # TH503 you mentioned. The Thule One-Key Lock Cylinders # TH450400 are a great choice for securing the roof rack to your vehicle. I included a video of this Thule roof rack being installed on a...
    view full answer...
  • Roof Rack For 2015 Toyota Prius For Ladder
    Since you are using it for work I highly recommend going with square crossbars for the most space and ease of use. The rack that fits your 2015 Toyota Prius is from Thule, and consists of the following parts: - Thule SquareBar Evo Crossbars # TH712400 - Evo Clamp Feet for Thule Crossbars # TH710501 - Fit Kit # TH145001 Then to secure the ladder you can use whatever tie-downs you like such as the Thule # TH523 attached to the Thule Load Stops # TH503.
    view full answer...
  • Roof Rack for 2012 Dodge Grand Caravan with Wider Crossbar Spread
    The roof rack with the widest spread that we offer is the Thule square bar that has a spread of 27-1/2 inches and consists of part numbers # TH712500, # TH480R, and # THKIT1043. Then for load stops for the ladder you'd want the part # TH503.
    view full answer...
  • Safely Hauling 2 Kayaks 2017 Subaru Forester
    Hi, that's a good question but I don't think I can answer definitively that yes you can do so "safely". The product is designed and tested with placement on the inside; that is not say that you personally can't be comfortable with the way you have loaded the kayaks. Since, per manufacturer, it has not been tested and approved for that type of placement, my suggestion is to consider use of kayak carrier such as the Rhino-Rack 2 Kayak Carrier w/ Tie-Downs # S512-S512X.
    view full answer...
  • Replacement Wing Bolt for Thule Load Stops TH503
    Yes we do offer the replace wing bolt for the Thule Load Stops # TH503 with the part # 753-0776-09.
    view full answer...
  • Roof Rack and Tie Downs to Carry Lumber on a 2014 Nissan Juke
    What I recommend is to add some load stops to the roof rack crossbars so that you can support the load side to side and use straps to secure the lumber front to back and tie off to the load stops. First you will need a roof rack for your 2014 Nissan Juke. The most cost effective roof rack that is a true custom fit is from Inno using square bars # INB117, feet # INSUT, and fit kit # INK399. Then for load stops I recommend # TH503 because they are designed to fit Tule square bars which...
    view full answer...
  • Rack for 2009 Dodge Durango to Carry Ladders
    The MaxxTow Van Ladder Rack MT70440 won't work with a 2009 Dodge Durango but we may have a different option for you to consider. To help carry your ladders, if your Durango has the factory installed side rails, I recommend simply adding an inexpensive roof rack, the Curt Roof Rack Crossbars for Raised Side Rails # C18118, which has crossbars that are 53-3/8" long, or the longer 58" bars of the Malone SteelTop Roof Rack # MPG202. I have added links to video reviews of both options for you...
    view full answer...
  • Roof Rack for a 2003 Toyota Tacoma to Carry Canoe and Ladder
    The Sportrack Semi-Custom Roof Rack part # SR1005 is a semi custom fit roof rack that offers a great price but it does not fit quite as well as some of the other roof rack systems. Unless you absolutely have to have the most inexpensive option I would not recommend this rack for you. A much better option for you since you plan on carrying longer items, (canoe and ladder) would be a Roof Rack with T-Load Hitch Mounted Load bar that consists of the following parts: Inno Aero Crossbars #...
    view full answer...

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Matthew S
Updated by:
Matthew S

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-940-8924