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Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter

Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter

Item # TRSS238
Our Price: $12.52
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Trailer Leaf Spring Suspension
Shipping Weight: 0.7 lbs
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The spring seat is a necessary component of your trailer's suspension system. When mounted with 1-3/4" or 2" wide leaf springs, it adds extra support and provides proper positioning for the axle. Great Prices for the best trailer leaf spring suspension from TruRyde. Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter part number TRSS238 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (193)
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TruRyde Trailer Leaf Spring Suspension - TRSS238

  • Spring Seats
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Round Axle - 2-3/8 Inch
  • TruRyde

The spring seat is a necessary component of your trailer's suspension system. When mounted with 1-3/4" or 2" wide leaf springs, it adds extra support and provides proper positioning for the axle.


  • Welds onto round, 2-3/8" diameter axle (typical 3,500-lb axle)
  • Works with 1-3/4" or 2" wide spring
    • Cutout on flat side of seat surrounds raised knob on leaf spring to prevent turning or shifting
  • Provides extra support and secure positioning for trailer axle
    • Please note: 2 spring seats are required for each axle


SS-238 TruRyde Spring Seat - 2-3/8" Round Axle

Replaces 3-43 Spring Seat - 2-3/8" Round Axle

Video of Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter

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

Video Transcript for TruRyde Trailer Suspension TRSS238 Review

Today we're going to be taking a look at this spring seat for typical 3,500 pound round trailer axles with a 2 3/8" diameter. The spring seat is a necessary component of your trailer suspension system when mounted with a 1 3/4" or 2" wide leaf spring. It adds extra support and provides proper positioning for the axle. It's made from a durable steel construction. It would weld onto a 2 3/8" diameter axle which is a typical 3,500 pound axle. It sits on top of a 1 3/4" or 2" side leaf spring. The cutout on the flat side would surround the raised knob on the leaf spring to prevent turning in or shifting.

It simply provides that extra support and secure positioning for the trailer axle. Please note that two spring seats are required for each axle. A few measurements to go over with you real quick starting with the overall length. It's going to give us a measurement of 4" long. Overall width, it's going to measure about 1 7/8" wide. Height is about 1 1/4" tall, and this opening right here of this rounded area at the widest point, that's going to give us a measurement of about 2 1/8".

That's going to do it for today's look at the spring seat for typical 3,500 pound round trailer axles with a 2 3/8" diameter.

Customer Satisfaction Score:

Customer Reviews

Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter - TRSS238

Average Customer Rating:  4.8 out of 5 stars   (193 Customer Reviews)

The spring seat is a necessary component of your trailer's suspension system. When mounted with 1-3/4" or 2" wide leaf springs, it adds extra support and provides proper positioning for the axle.


Great to get these high quality suspension parts to finish the axle modification on my travel trailer. The thick gauge of the metal makes it easy to weld the parts in place. I appreciate that they were available without having to buy a entire axle tube assembly!



Sturdy material made this Seat easy to weld on, and it wont collapse under load. Glad they are available.

Etrailer Expert

Mike L.


@Russ We're glad to hear that the # TRSS238 TruRyde spring seat worked well for you!


These worked like they should with the axle and u-bolts.


When I recieved the product I was ready and excited to get it installed. I had to do an axle flip to gain frame clearance on my custom jeep trailer build and needed new axle perch mounts. After I triple stitch welded the steel It was a perfect fit, and a year later no problems and holds great.


So far so good , installation went well, used it several times with a good load no problems yet


Great price, arrived in a very timely manner, quality of materials is great. I'm very happy with mu shopping experience.


So when the order arrived I received only one spring seat to do an axle and when I called customer service the young lady was rude and made me feel stupid for not seeing the fine print that said I only get 1/2 the materials to do one spring. This year I have vowed to stop doing business with these type of companies that charge high prices and use underhanded tactics to do business. I will not be returning this because they want me to pay shipping and I also will not be ordering anything else due to the way they treat customers like they have the monopoly.

Etrailer Expert

Sierra K.


A manager will reach out to you.


Exactly what was needed.


It looks like it will fit my 1954 Jeep CJ3-B Dana 44 axle tube, although it is 1/8" wider than ideal.


Trailer definitely rides smoother and better over rough roads.


I bought springs, mounts and Tailight kit to fix up a rusty utility trailer. I cut, weld scraped and painted for the better part of a month in spare time. The springs and mounting instructions on e trailer are excellent. Only issue/shortcoming are the tail lights. Wire just pushes in and spring loaded strip holds them. I soldered and sealed the connection with silicone. So far that salt covered roads haven't hurt it in winter. The folks at etrailer are very helpful and prices are a good value.


well made exactly what i wanted!!


I used the seats to reposition my springs from the lying under the axle of my TT to sitting on top of the axle. This gave me about 4.5 in of additional much needed ground clearance.
The cut and sizing of the seats was spot on and made for and easy axle flip.
I opted to use these and the U-bolt and plate kit instead of the Dexter spring over kit and saved about $50. I did the entire job start to finish in 3 hours.
One thing to note is that if you are looking to flip the position of your axles from the top to the bottom like I did. You are also going to have to lengthen your brake lines also.


Very satisfied with the product. I recently purchased 2 new dextor axles locally which came with springs mounted underneath. My application required the springs to be mounted on top of the axle and so I intended to remove the springs, flip the axles over, and bolt the springs back on. Unfortunately I realized this could not be done due to the axle tube being factory cambered (bent slightly upwards) and so i then searched and found these spring seats at a reasonable price and fit perfectly. It was by far easier to leave the original seats in place as guides and weld these new seats on. Also of note these seats are slightly larger than the factory Dextor seats. Thank you for a great product and quick shipping.


Perfect replacement


These are an awesome upgrade to your trailer with 13" tires
These went on a Coleman tent trailer. This is the big one with all the stuff making it heavy. The old load range C tires look like it was run on the sidewalls of the tire as the trailer is heavy. The new load range D tires with the extra 15 psi (65) made the difference. Looks normal now. I also ordered the 3,500 axle leaf spring perches. Going to weld them to the top of the axle to mount the springs above the axle. This gains 4.25" lift. Needed as it drags just going out of the driveway lol


Product is an excellent, cost efficient way to get the ground clearance needed for your single axle camper. I gained 5.5 inches of clearance at the lowest hanging plumbing parts which allows me to pull my camper over water bars and roadside swales. Also, had to upgrade to a two-step staircase to accommodate access to camper with the new height.
Simple install if you have access to a welder. No other parts/materials needed.


Brent was awesome!! Helped me get the correct parts I needed. I ordered in a Wednesday midmorning and received everything the following day with free shipping. I will buy all my trailer needs from and will use Brent.


The set of springs I purchased for a dump trailer definitely fixed the problem of one broken spring and one very worn out spring. The springs, axle u-bolts were all the perfect fix and replaced perfectly. Ordering another set now AND a rear axle I was so pleased with the outcome. Thanks etrailer!


worked perfect for what they're designed to do


This product fit perfectly to the axle I had.
I didn't get a good picture but if you look closely you can see one of them.


Rebuilding a home made trailer, we used it to haul large round bales. Needless to say was getting pretty rough. We are planning on using it to haul our UTVs now so we are down grading from a 15000 lb trailer to a 10000 lb trailer. We purchased 3 used 3500 lb axles and with the kits we purchased from you it has made the swap over very easy, everything fit prefect, Thanks


2 3/8" spring pads, welded on. Were great for swapping axle over to axle under setup. Achieved 5 1/4" lift making my fifth wheel taller. Tall enough for a newer truck with taller stance.


I ordered trailer springs and several needed plates and U bolts. They arrived in a timely manner and were well packed. The products appear to be good quality and I will be installing them tomorrow.


Nice quality and fit was very good for my application. I swapped out the front axle on my 31 Plymouth coupe and had to add spring perches and u-bolt assemblies to the newer style of straight axle I was installing. No modification was needed. The fit was great!!


Great fit, they went on like original. I had to flip the axles to raise the trailer a bit to ride level with my tow vehicle. Pulled the axles, lined up the new seats and welded them on and reinstalled. Fast packing and shipping. Impressed with etrailer and will be buying from again.

Show More Reviews

See what our Experts say about this TruRyde Trailer Leaf Spring Suspension

  • Why is Spring Seats part # TRSS238 Sold Individually
    If for some reason one was damaged and you only needed to replace the one spring seat is why we offer the Spring Seats part # TRSS238 individually.
    view full answer...
  • Is Trailer Axle Spring Seat # TRSS238 Sold Individually or in Pairs
    The trailer axle spring seat part # TRSS238 is sold individually. If you needed two of these you'd need to order a quantity of 2.
    view full answer...
  • Do Trailer Axle Spring Seats Weld to Axles
    You need to weld the spring seats like the part # TRSS238 that you referenced to the axle tubes.
    view full answer...
  • Where on Axle Should Spring Seats Be Welded On
    The bend in an axle (the top of the arch) should be at the top of the axle so that as the trailer load is placed on the axle it flattens out. The spring seats # TRSS238 should be welded to the underside as shown in the linked diagram.
    view full answer...
    Image 1 for
  • Spring Seat Measurement for 3,500 lb Axle
    I have added a cutout of the dimensions of the Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter # TRSS238 for you to check out. The spring seat, which works with 1-3/4" or 2" wide springs is 4" long, 1-7/8" wide, and 1-1/4" tall as you can see in the photo.
    view full answer...
    Image 1 for
  • Can the Spring Seats Be Moved on the Dexter 3,500 LB Drop Axle
    The Dexter Trailer Axle Beam with 4" Drop E-Z Lube Spindles part # 8327812 measures 89" long between each hub face and 74" long between each spring center. It is not offered with 89" between each hub face and 70-1/2" long between each spring center because the spring seats can be moved. The spring seats for this axle can be moved to a minimum of 75" apart and a maximum of 71" apart. Since you only need to go in 1/4" more on either side I would say you are fine to move the spring seats on...
    view full answer...
    Image 1 for
  • Does Tru-Ryde # TRSS238 Spring Seat Include 1 or 2 Pieces
    The # TRSS238 Tru-Ryde Spring Seat you referred to is sold individually, if you needed a pair, you'd need to order two of them.
    view full answer...
  • How To Make It So Axle Has Spring Seats On Top Of Axle So Axle Is Underneath Leaf Springs
    I would be happy to help, but we do not offer any axles with the the spring seat mounted on the top of the axle. There is a work around to this but I will need to know what size axle you are needing for your trailer, as I am unable to determine the correct axle based on just the trailer model. You will need to measure your axle from hub face to hub face, spring center to spring center, and determine the axle rating of the axle. To find the axle rating you will need to look on the axle...
    view full answer...
    Image 1 for
  • Can The 95" 3,500LB Dexter Axle # 7359765 Have New Spring Seats Welded On at 78"?
    The 95" Dexter Trailer Axle # 7359765 requires a minimum overhang of 11.25" and maximum overhang of 18". You will be able to weld on new Spring Seats # TRSS238 at 78" as that puts you at 17" and still within the total overhang allowable from Dexter.
    view full answer...
  • Can I Add Spring Seats To a Different Mounting Location On My Dexter 3,500LB Axle?
    Yes, you can weld on new Spring Seats # TRSS238 to your Dexter axle. It is important to ensure that the springs seats are welded onto the axle with the correct axle orientation. The axle does have a top and bottom as well as a front and a rear. It is a good idea to place the axle where you are going to need it and ensure that it is centered and square on the trailer before fully welding on the new seats.
    view full answer...
  • Spring Seat for Trailer Axle that is Getting Moved to Other Side of Leaf Springs
    You'll need to weld new spring seats on the opposite side of the axle so that you can move the axle to the other side of the leaf springs. So since I don't know what diameter axle you have you'd need to measure to be sure. The part # TRSS300 is for 3 inch diameter axles that are normally between 5,200 and 7,200 lb. Part # TRSS350 is for 3-1/2 inch diameter axles like what are 8k axles, # TRSS175 is for 1-3/4 inch 2,000 lb rated axle, and # TRSS238 is for 2-3/8 diameter 3,500 lb axles.
    view full answer...
  • How Exact Does The Spring Seat Measurement Need To Be?
    I spoke with Dexter about the spring seats being ever so slightly off, and they said it is possible to use the Trailer Axle w/ Electric Brakes # 8327812-EB since it is so close, but it may also put more stress on the suspension. This can cause premature wear and isn't recommended. It will be better to either have a local trailer supply store order an axle to your specifications, or order the # 8327812-EB with qty.2 of the 2-3/8" Axle Spring Seat # TRSS238. You will need to remove the existing...
    view full answer...
  • Trailer Leaf Springs Upside Down?
    Merely going with longer shackle links won't provide enough room for the suspension to articulate, you'll want to flip the springs back right side up. The way things are, you have zero articulation in the suspension which isn't safe. Simply flipping the springs the other way around will significantly raise the height of the trailer, if you'd like to have the ride height as low as possible, you can turn the springs right side up, but mount them to the underside of the axles. To do this,...
    view full answer...
    Image 1 for
  • Spring Seats for Axles
    If by spring pads you mean spring seats, then no we do not sell axles without spring seats. We do sell spring seats separately in varying sizes depending on your axle diameter. I have linked our entire selection below. The Dexter Trailer Axle w/ Electric Brakes - 4" Drop - E-Z Lube - 5 on 4-1/2 - 95" - 3.5K item # 7685269-EB you were looking at would use the Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter item # TRSS238. If I am mistaken and this is not what...
    view full answer...
  • Correct Replacement for 3,500 Lb Axle with 95" Hub Face
    The correct replacement 3,500 axle with 95" hub face measurement is the Dexter Trailer Axle Beam with E-Z Lube Spindles part # 7359765. The spring centers are 80" apart so you will need to remove them and tack weld new spring seats in the locations that you measured using part # TRSS238. Please note, the spring center is measured from the center of each seat. The hubs are not the same for a 3,500 lb and 7,000 lb axle.
    view full answer...
  • Recommended Replacement 3,500LB Trailer Axle For a Homestead Trailer
    For your Homestead trailer with a 3,500lb axle I recommend the Dexter Trailer Axle Beam with E-Z Lube Spindles # 7359765. This is a straight axle that shares your same hub face measurement. The spring center on this axle is only 80" so you might verify where the center point of your suspension hangers are to determine if you need to have the Spring Seats # TRSS238 moved. If you can let me know what size lug pattern you are looking to use and if you want an idler hub or the type of brakes...
    view full answer...
  • Can New Spring Seats be Welded to 95 Inch Trailer Axle
    Yes, you can weld on new spring seats for a 95 inch trailer axle since there are none with the measurements you need. For the Dexter Trailer Axle with Idler Hubs # 7359765-I you can use the Spring Seat # TRSS238. I have added links to video reviews for you to check out as well.
    view full answer...
  • When Replacing Trailer Axle Does the Spring Seat Measurement have to be Exact
    For axles such as # 8327812-I the spring center measurement does have to be exact, however, you can weld on new spring seats if you need to. You would need to have a professional welder weld on 2 of # TRSS238 in the proper locations.
    view full answer...
  • U-Bolt Plate Width For Leaf Spring Mounting on APUBR-1
    The width dimension of the U-Bolt Kit for Mounting 3500-lb Axles # APUBR-1 is 2-3/8", which is the typical diameter of a 3500-lb axle. These can be used to mount leaf springs 1-3/4" wide to an axle when used with with the included plates and Spring Seat for Typical 3500-lb Round Trailer Axles # TRSS238 . I've attached a picture for reference on these measurements.
    view full answer...
    Image 1 for Image 2 for
  • Compatible Axle with Spring Center Measurement of 82 Inches
    The Dexter Trailer Axle w/ Idler Hubs - E-Z Lube - 5 on 4-1/2 Bolt Pattern - 95" Long - 3,500 lbs # 7359765-I can work for you if you weld on new spring seats # TRSS238 in the correct location for your application. You will need to remove the current mounts and add the new ones ensuring they are aligned. Then once welded make sure to use a primer and sealer and paint to protect from corrosion.
    view full answer...
  • When Moving Leaf Spring Above Axle Can U-Bolts be Reused
    If your U-bolts are still in good shape you could reuse them. You would just need a new spring seat designed for your diameter axle. I attached a link to a page that has all of the spring seats we carry. If you select your axle diameter from the filters on the page the correct one will be listed.
    view full answer...
  • Does Trailer Spring Seat Need to be Welded to Axle
    You do want to weld the spring seat of your axle to it. If you are in need of a spring seat for a 3,500 lb axle you'd want the part # TRSS238 and you'd be set.
    view full answer...
  • Replacement 3,500 lb Trailer Axle With 95 Inch Hub Face to Hub Face Measurement
    We do have a 3,500 lb trailer axle with a 95 inch hub face to hub face measurement, though you'll need to weld on new spring centers because 95 inch axles have 80 inch hub spring center measurements. So for the axle, without any hubs or brakes, you can use either of the following, along with the spring seats: - Dexter Trailer Axle Beam with 4" Drop E-Z Lube Spindles - 95" Long - 3,500 lbs # 7685269 - Dexter Trailer Axle Beam with E-Z Lube Spindles - 95" Long - 3,500 lbs # 7359765 - Spring...
    view full answer...
  • Can Spring Seats On Trailer Axle Be Moved To Match Trailer Frame?
    They sure can! What you will need to do is replace the spring seats that are currently welded on the axle in question, and have a qualified welder weld them in the correct location to match your trailer. Now the correct spring seats will be dependent on the diameter of your axle tube. The most common sizes are the 1-3/4" # TRSS175 which is common for 2000lb axles, the 2-3/8" # TRSS238 which is common for 3500lb axles, or the 3" # TRSS300 which are common for 5200-7000lb axles. I included...
    view full answer...

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