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CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc

CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc

Item # CE23103
Retail:$57.47
Our Price: $39.39
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Mount your square, 2" wide axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers. Great Prices for the best trailer suspension parts from CE Smith. CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc part number CE23103 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (467)
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  • Videos (1)
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CE Smith Trailer Suspension Parts - CE23103

  • U-Bolt Kits
  • Boat Trailer
  • Snowmobile Trailer
  • Square Axle - 2 Inch
  • 4-1/2 Inch Long
  • 3500 lbs
  • 1/2 Inch Diameter
  • CE Smith

Mount your square, 2" wide axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.


Features:

  • Mounting kit attaches trailer axle to leaf springs
  • Galvanized plates and zinc-plated hardware resists rust and corrosion
  • Includes:
    • 4 U-bolts
    • 2 U-bolt plates for 1-3/4" springs
    • (8) 1/2" Hex nuts and washers
  • Made in the USA


Specs:

  • Application: 2" wide, square axle
  • U-bolt dimensions
    • Inner width: 2-1/8"
    • Length: 4-1/2"
    • Diameter: 1/2"


23103 CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc




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Video of CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc

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




Video Transcript for CE Smith Trailer Suspension - Leaf Spring Suspension - CE23103 Review

Today we're going to be taking a look at the CE Smith u-bolt kit for mounting 2" square trailer axles. The mounting kit is going to attach a trailer axle to the leaf spring. The plates are going to be galvanized steel, then the hardware is going to be steel construction but that's going to have a zinc plated finish on it, so overall the unit is going to do a great job at resisting rust and corrosion. This kit is going to include 4 u-bolts, 2 u-bolt plates, and then it's going to come with the appropriate hardware, so you're going to get 8 hex nuts and 8 washers, and those are going to be lock washers. We can tell that this is designed for 1 3/4" springs simply by taking a measurement between this hole and this hole, and we can see that- that measurement is right at 1 3/4". Now the plates themselves going this direction we're looking at 3 3/4", and then going this direction it's going to have a measurement of 4". It does have the center hole for punch out on the spring.

Then right here for the u-bolts, a couple measurements I want to go over with these, these are going to give us an inner width, measuring inside edge to inside edge, of just over 2" so that's how we know that there are designed for a 2" wide square axle. Center on center those posts are going to be separated by 2 5/8". The length, measuring from the bottom of this area here to the end of the stud, that's going to give a measurement of right at 4 1/2". Then the diameter of the u-bolts, so the thickness right here outside edge to outside edge, there are going to be a 1/2" diameter. That's going to do it for today's look at the CE Smith u-bolt kit for mounting 2" square trailer axles.

Customer Satisfaction Score:


Customer Reviews

CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc - CE23103

Average Customer Rating:  4.8 out of 5 stars   (467 Customer Reviews)

Mount your square, 2" wide axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.

by:

Arrived well packed and as advertised.
I'm
going to pull the azle out of the boat trailer
and wanted to have this 'on hand' should I break
some of my U bolts. I've bought from you before -
always been happy, thanks



by:

Would have gotten 5 stars if delivered within 3 days. Otherwise product fit. Thanks

Jon

5/24/2024

Perfect fit. No issues



by:

Worked perfect for mounting a storage box to my boat trailer.



by:

Very strong Holds new leafs.



by:

Complete waste of time and money. I bought both springs, and this set of u-bolts plates from etrailer for a new 2" square axle. The u-bolts are too short. I'd suggest someone buy a new tape measure.
I also had to grind down the spring center bolt as it stuck out of the small adapter plate and kept the spring from seating correctly (used the adapter palte which came with the springs instead of drilling a big hole in my brand new axle.)

It is getting harder and harder to get the parts I need from these folks.

Now waiting for parts to come from another vendor.



by:

Everything fit perfect. I had to replace the leaf springs on my boat trailer. I have a 24' fiberglass boat that is launched and retrieved in the salt water the original springs only lasted 7 years. The new springs are heavier duty and painted or coated with a better material. Over al very very pleased.

David

5/6/2023

After 1 year everything is still workong great.



by:

I used this kit to replace the rusted ones on my flatbed trailer. I also flipped it so the axle is on top of the springs to lower it for loading my lawn tractor. See before and after pics.



by:

Good product, fit as expected. One year in and ubolts are holding up great.



by:

The 26” on center leaf springs that I just purchased were delivered quickly and worked perfectly on my trailer. The only issue was that I ordered 3” shackle bolts (my fault) but really needed 3 1/2” so I returned them to etrailer. The return process was very easy, they sent me a RMA # and the shipping label my email, and I just dropped it off at the UPS store. Great doing business with etrailer!!!!!



by:

Very fast deliver and was shipped on ti me!



by:

Exactly what I needed



by:

WOW sums up my recent trailer part purchases. The u-bolts fit perfectly and are well made...see attached photo and of my trailer with new parts installed. Outstanding quality, price, lightning fast delivery, and exceptional customer service from order to drop off at my doorstep. Will recommend and order again. Well done, e-trailer, and Thanks.



by:

Priced fairly and shipped quickly.



by:

Exactly as described. Made replacing my axle a piece of cake!



by:

Good parts but they will not fit on springs with 6 leafs. The ubolts are too short. You need 5” bolts or longer.



by:

Out standing as all was. shipping is out standing order them on Friday after hours they where at my door Tuesday the next week out standing shipping. I did the same thing with brake plates all ready to put in ordered Friday I was in Oregon at the time they was at my house the next Tuesday or Wednesday standard shipping is out standing a long with everything I got here.



by:

Good Stuff



by:

Easy transaction. Quick delivery. Parts in good condition and fit/work well. Installed in less than 1 hour.



by:

Fit my load rite boat trailer, bought with springs. Good quality!



by:

Will work with the springs I purchased, but beware if your spring pack is over an inch thick on a 2x3 axle, you will need longer u bolts. And I didn’t see longer than 4.5” offered at etrailer



by:

Good stuff and a day early!



by:

Excellent product, perfect fit for my older trailer. Great customer support via phone to confirm all measurements before buying. Very happy customer!



by:

Very helpful great customer service



by:

Perfect replacement for my 1971 Streamline Duchess spring over axle conversion



by:

Perfect timing,and they have everything you need!


25
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See what our Experts say about this CE Smith Trailer Suspension Parts

  • Is There Way to Do Over Under Kit with 2 inch Square Axle on Trailer
    We have 2 inch square U-bolt kits like part # CE23103 which you could use, but we don't have spring seats for this axle size. So you would have to remove the spring seats on your axle and weld them on the other side and you'd be have an over-under kit that fits your axle. You might have to drill spring seats in the axle.
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  • Replacement Leaf Springs for Wesco Boat Trailer
    For a 3,500 lb trailer axle leaf spring I would recommend the galvanized part # e68SR which is 25-1/8 inches long. Galvanized steel holds up a lot better to rust than standard steel and while this is a little shorter than what you have now worn out springs tend to flatten out and get longer over time. For a 2 inch square u-bolt kit then you'd want the part # CE23103 and you'd be set. To pick out an axle you would need to know the hub face to hub face dimension as well as the spring seat...
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  • Can Axle Over Under Kit be Installed on Trailer with 2 inch Square Axles
    Axle flip kits are great options for raising the suspension of a trailer. Trucks weren't as tall back then as they are now so I'm not totally surprised your trailer is sitting so nose high. We have 2 inch square U-bolt kits like part # CE23103 which you could use, but we don't have spring seats for this axle size. So you would have to remove the spring seats on your axle and weld them on the other side.
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  • Switching From Slipper Springs to Double-Eye on a Single 2K Axle Trailer with Square Axle
    To switch to double-eye spring suspension I recommend getting parts individually since the u-bolts cannot be swapped out of kits. The spring in the kit is # e84SR. We have a few different u-bolt kits for square axles including # CE23102 for 1-1/2 inch square axles. For a 1-3/4 inch square axles you can use u-bolt # 175130 and plate # 116308. And for 2 inch square axles we have # CE23103. You will also need a new hanger kit since double-eye springs use different hangers than slipper springs....
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  • Can Nylon Lock Nuts Be Used On CE Smith U-Bolt Kit CE23103?
    While you could physically replace the lock washer and nut included with the CE Smith U-Bolt Kit # CE23103 with nylon lock nuts, I do not recommend doing so. Nylon nuts deteriorate overtime and can back off where the lock washer and nut included will stay tight, and are also what these U-bolts were tested and designed for. I included a video of the # CE23103 for you to take a look at.
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  • Recommended Trailer Components Between Frame And 2 Inch Square Axle Of Small Trailer
    For your trailer with GVWR of 780 lbs, the best option we have for your leaf springs is the 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8" Long # e84SR you mentioned but they are definitely overkill. To mount your springs to your frame, I recommend the Single-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front, 7/8" Rear # APS1 which will need to be welded in place. To mount your 2 inch square axle, I recommend the CE Smith U-Bolt Kit for Mounting 2" Square Trailer...
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  • Replacement Leaf Spring Recommendation for 2009 Venture VAB-3025 Boat Trailer
    According to my research you should need 25-1/8" long springs rated for a 3,500 lb axle which means you'll need the following parts: - 3.5K Leaf Spring # e54SR OR Upgrade to part # e68SR - U-Bolt Kit # CE23002 for Round Axle OR # CE23103 for Square Axle - Heavy Duty Suspension Kit # K71-403-00 You'll want to verify the length of your current leaf springs by lifting your axle off the ground by the frame and measuring from center eye to center eye. If you measure something different...
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  • U-Bolt Kit For Replacing Leaf Springs On a Trailer With Square Aluminum Axle
    While I do not see we carry any slipper leaf springs close to your measurements we do have a couple U-bolt kits for you to select from with having a square axle. We have a kit for 1-1/2" Square # CE23102 or 2" Square # CE23103 axles. I may be able to help you find a viable replacement leaf spring to go to double eye or another type of slipper spring but I will need some photos of your hangers along with any weight capacity information on your trailer or axle.
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  • Can Over Under Kit Fit 2 inch Square Axle on Trailer
    We have 2 inch square U-bolt kits like part # CE23103 which you could use, but we don't have spring seats for this axle size. So you would have to remove the spring seats on your axle and weld them on the other side and you'd be have an over-under kit that fits your axle. You might have to drill spring seats in the axle.
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  • Can Round Trailer Axle be Replaced with Square Trailer Axle
    Yes, you can replace a trailer's round axle with a square axle as long as the weight capacity is appropriate. You will need a new U-bolt kit to connect the axle: 1-1/2 inch square axles # CE23102 1-3/4 inch square axles # 175130 for the U-Bolts and # 116308 for the plate 2 inch square axles # CE23103
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  • Replacement Leaf Springs and U-Bolt Kit for a 2005 Fabrique Dual Axle Boat Trailer
    It sounds like you're needing the 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles # e48SR along with the CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles # CE23103. The leaf spring measures 26" long center eye to center eye and has a Dacromet finish which is more resistant to corrosion than the classic black powder coat finish, especially when it comes to water. Just be sure that your axles aren't rated for higher than 4,000 lbs and that your axle isn't more than 2" square...
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  • Replacement Suspension for Tandem Square Axle Venture Boat Trailer
    I reached out to the manufacturer but they are not currently able to look up VIN numbers for part assistance. I was able to find on their website that the square tube axles are either 2000 lbs capacity each or the more common 3,500 lbs capacity each. Most of their trailers utilize the 3,500 lb axles and I believe that is the case for all their tandem axle trailers. For your trailer you can use the following: -Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear...
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  • Replacement Leaf Springs and Hardware for 2008 Venture Boat Trailer
    To find replacement leaf springs you will need to know your axle capacity along with the length of your current leaf springs. If you don't already know the axle capacity I would try checking the axle tag to see if it is listed. If not, you can call Venture with the VIN and they should be able to tell you. Once you have the capacity go ahead and measure the length of your leaf springs. This is the spring eye to spring eye measurement. I have attached an article below which has a video...
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  • Recommended 30 Inch Slipper Springs and 2 Inch Square Axle Mounting Kit
    For your 2,000 lb square axle, I recommend the 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # SP-039275 which is a little stronger than your axle but won't increase your capacity of 2,000 lbs. This is a 30 inch long slipper spring with a 1.75 inch width as you stated. I recommend using the Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079 with each spring. For your square axle mounting, I recommend the CE Smith U-Bolt Kit for Mounting...
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  • Determining The Correct Replacement Leaf Springs For Tandem Axle Trailer W/ Square Axles
    I would be happy to help you find the correct replacement suspension components for your trailer, but you will need to take a few measurements first. Starting with the leaf springs, you will need to make sure that the tires on the side of the trailer you are working on is off the ground with the trailer supported by the frame as the leaf springs will stretch when the tires are on the ground and weight is applied. If your 26-1/2" measurement was with the tires off the ground the closest...
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  • Hanger Kit Recommendation for Slipper Leaf Spring # e33SR
    Sounds like what you are in need of is a single axle hanger kit for the leaf spring part # e33SR that you mentioned. For that you'd only need the # APS3SE and you'd be set. This gives you the hangers for the front and rear for the spring as well as the correct nut and bolt to hold it all. For a u-bolt kit you'd then want the part # CE23103 for the axles.
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  • Are Trailer Spring Seats Needed for Square Axles with Leaf Springs?
    Square axles normally don't have spring seats like a round axle but do have a hole for the leaf spring bolt to fit into. Take a look at the CE SMITH # CE33201GA-HUB for a visual. The U-bolt mounting kits will have a hole in the center for the other side of that leaf spring bolt to keep everything in line. If you have a 1-1/2 inch square axle use # CE23102. If you have a 2 inch axle use # CE23103.
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    Image 1 for
  • Hanger Kit With Leaf Springs For Mounting Tandem Axle Trailer Suspension for 2" Square 3500LB Axles
    On our page for the Tandem-Axle Trailer Hanger Kit # AP233-H248 we will have a diagram for the hanger measurements when using four of the Springs # e54SR. You will need the CE Smith U-Bolt Kit # CE23103 to attach your 2" square axles.
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  • Replacement Leaf Spring Assembly for a Single Axle Cargo Trailer
    Thank you for the photos! They really helped. For your double eye leaf springs, the 4-leaf 25-1/8" Long, part # e54SR, that you referenced are in fact the right ones for you. The reason they are slightly shorter than your current ones is because they tend to stretch a little over time. Also, remember that you will need two. From your photo, it looks like you might have trouble with the existing hardware when removing the old springs and installing the new ones due to rust. If you end...
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    Image 1 for
  • Do You Have A Suspension Kit With The 3-Leaf Double-Eye Spring for 2,000-lb Axles # SP-113275?
    We will not offer the 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles # SP-113275 as a kit as there are so many different options for the leaf spring when mounting to the trailer. The spring will come with a Nylon Bushing # TRBU11566 already installed. You can replace this with a Bronze Bushing # D014-077-00 if you intend to mount the leaf springs using Wet Bolts # 126B2 rather than a Shackle Bolt # 166081. Next you will have different U-Bolt Kits depending on your trailer axle....
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  • Need for Additional U-Bolts to Install CE Smith Roller-Style Guide-Ons CE27610
    The CE Smith Roller-Style Guide-Ons # CE27610 will fit your 2 x 2-inch trailer frame. The standard included brackets work with frame members up to 3-inches wide and 4-1/4-inches tall. It is a good idea to add another u-bolt to each guide-on in your application. I linked our main page for trailer u-bolts where you can see items like CE Smith U-Bolt Kit # CE23103 and # UBZC12X212X525.
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  • How To Flip Square Trailer Axle For Ground Clearance
    It is possible to mount the springs on top of the axle which is called "flipping the axle". To accomplish this we normally recommend an over-under conversion however there is not one with square u-bolts available for your square axle. Instead I recommend to use CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc part # CE23103 which is galvanized for boat trailers. The U-bolts measure Inner width of 2-1/8" with a length of 4-1/2" and diameter of 1/2"....
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    Image 1 for
  • Replacement Leaf Springs for Harbor Freight Folding Trailer
    The best option we have for you is the 3-Leaf Double-Eye Spring part # e84SR with the Single-Axle Trailer Hanger Kit part # APS4. This option will replace the leaf springs and leaf spring hanger brackets which is needed because the new double eye leaf springs are 1-3/4" wide and the old slipper springs are 2" wide not to mention the length discrepancy and leaf spring hanger bracket height. The CE Smith U-Bolt Kit for Mounting part # CE23102 or part # CE23103 can then be used to complete...
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  • Replacing Old Slipper Springs and U-Bolts
    Though the leaf springs are rusty, they do not seem to look pitted, so they should still be fine. It wouldn't hurt to clean them off with WD-40 or a rust remover to make sure they don't get worse. If you did want to replace them though, you could go with something like the Universal Group # SP-040275. As I couldn't tell 100% how wide the leaf spring is, this is a 1 3/4 wide one. It is also much longer with the overall length of 30 inches, so the rear hanger would most likely need to be...
    view full answer...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Cole B
Installed by:
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Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Written by:
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