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Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center

Item # APT3
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Our Price: $68.50
Trailer Leaf Spring Suspension
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Shipping Weight: 18 lbs
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APT3 - Double Eye Springs etrailer Trailer Leaf Spring Suspension
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Leaf-spring mounting kit includes 1-1/2" tall front hangers, 2-1/2" tall center hangers, 1-1/2" tall rear hangers and necessary hardware. Equalizers are 7-3/4" long. Components for mounting axle to springs sold separately. Lowest Prices for the best trailer leaf spring suspension from etrailer. Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center part number APT3 can be ordered online at or call 1-636-306-4830 for expert service.
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etrailer Trailer Leaf Spring Suspension - APT3

  • Hangers
  • Suspension Kits
  • Spring Mounting Hardware
  • Double Eye Springs
  • Tandem Axle
  • etrailer

Leaf-spring mounting kit includes 1-1/2" tall front hangers, 2-1/2" tall center hangers, 1-1/2" tall rear hangers and necessary hardware. Equalizers are 7-3/4" long. Components for mounting axle to springs sold separately.


  • Attaches 4 leaf springs (sold separately) to your trailer frame
    • Use table below to determine hanger location based on type of leaf springs
  • Achieves 3-1/2" or 3-3/4" clearance between trailer frame and axle, depending on axle size
  • Includes:
    • (4) 1-1/2" Tall front and rear hangers
    • (2) 2-1/2" Tall center hangers
    • (2) 7-3/4" Long curved equalizers
    • (8) 2-5/8" Long shackle straps
    • (14) 3" Long x 9/16" diameter shackle bolts
    • (14) 9/16" Diameter locknuts
  • Designed for use on trailers with tandem, 2,000-lb to 7,000-lb axles
  • Does not include components for mounting axle to springs

Hanger Locations for Tandem Axle

Leaf SpringsA - Distance Between Front and Center HangersB - Distance Between Center and Rear HangersC - Distance Between U-BoltsD - Distance Between Center of Axle and Trailer FrameAxle Diameter
SP-169275 (1020)24-3/4"24-3/4"30"3-3/4"1-3/4"
(typical 2,000-lb trailer axle)
SP-219275 (PR722)
SP-220275 (PR3)
SP-218275 (PR4)
SP-212275 (PR4B)
SP-111275 (PR5)
SP-198275 (PR6)
(typical 3,500-lb trailer axle)

Note: The above table provides an indication of where the included hangers can be mounted on your trailer. The distance between the hangers may vary depending on your specific application. Be sure to verify proper positioning before welding.

TSW-S5 Tandem Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs

Replaces APT3

Customer Reviews

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center - APT3

Average Customer Rating:  4.8 out of 5 stars   (96 Customer Reviews)

Leaf-spring mounting kit includes 1-1/2" tall front hangers, 2-1/2" tall center hangers, 1-1/2" tall rear hangers and necessary hardware. Equalizers are 7-3/4" long. Components for mounting axle to springs sold separately.


5 Star for shipping
1 Star for Pcs (Some
pcs have defect)
1 Star for communication. I send an email with the picture of the defect pc. I did not receive any answer. Who ever put this kit together did not made any quality control. BE AWARE IF YOU BUY YOU MAYBE RECEIVE DEFECT PCS.

Thank you for reaching back out. I have sent your information along to our customer service team.
-- Etrailer Expert Brooke M - 05/24/2022




I ordered several different trailer parts from etrailer and the service is good so I won’t order from anyone else. The product is always right


I received the product and installed it on my dump trailer. Parts fit perfectly and were as described on your site.
Thank You


Bought a used car trailer in need of repair, sand blasted and painted the trailer. While working on it more and more things needed to be replaced. This hanger kit was a great match. Thank you etrailer.


The kit was a direct replacement no issues with the installation


Rec'd item quickly along with new wheels I purchased. Items were packed very well. I installed my new wheels, tires, and equalizer kit the following weekend and my trailer was ready to go.


So far good. Haven't got to pull it still full of equipment for winter storage easy to install with all new parts exactly right parts. The girl took order very polite knew the parts an how to measure my stuffto get right parts price good.


Purchased this item before. Great price and wonderful shipping. Will purchase from Etrailer in near future.


This was my first first order with etrailer and found them to be very good to work with. I had questions along the way which were handled expeditiously and resulted in ordering the right parts, which were a perfect fit with my old trailer. Product packaging was fine and the turnaround was fast.
If I was to offer a suggestion, it would be to include some instructions regarding proper lubrication techniques - location and type of lube they'd recommend.

Michael, you could lubricate the bushings if you want to with a multi-purpose grease, but the nylon bushings dont necessarily require lubrication, so there isnt a particular technique. We offer wet bolts that have a grease zerk on them to pump grease through, but other than that, the nylon bushings are designed to provide smooth operation until they wear down to a point where they should be replaced.
-- Etrailer Expert Laura E - 03/13/2017
The parts I bought from you to repair the suspension on our livestocktrailer did the trick of getting it roadworthy. We dont use it often, butthe couple times weve had it on the road since the repairs have beenuneventful and thats a good thing when you have a couple tons of beef onit.
Michael - 02/05/2018


fit great no problems, seems to be a good quality product, will be able to tell in 10 K miles


The trailer leaf spring kit was exactly the right fit for my trailer and has put us safely back on the road. etrailer helped me pick the right size and understand the options. What I received was a match for my need as my parts were completely trashed. This kit along with the bushings/sleeves made the repair quick and easy at a great price. I am glad that etrailer has knowledgeable folks available to talk through questions and take the guess work out of the purchase.


Great price and fast shipping. Everything fit perfectly!!!


Hi George,
The trailer axel hanger kit
that I purchased from you folks worked great!
The bushings were shot in the old ones and the new kit installed easily and solved the problem. Trailer tows like a dream. I will do business with you again if I need parts!
Thank You
Terry L


My tandem axle equalizer kit, is of the highest quality. All the parts and hardware well made and will last for years to come. The combination of the knurled bolts and locking nut give me the piece of mind, that none of the hardware will back out and come off, on the highway. I would highly recommend this kit.


Everything has held up nicely. Been on the trailer for a year.


Bought and installed this rebuild kit on a 10 ft. horse trailer turned utility nearly a year ago. Trailer still pulls and rides like brand new after being abused almost daily.
Very pleased with the quality of parts included, and the detailed measurements given in the product descriptions. etrailer is where I will continue to look first for parts.


Re did my pontoon trailer and it is nice to know they are good for another 30 years of service.


They work excellent! The trailer is so much tighter.
When it is empty, you can't even feel it behind me. Except the noise from the ramps.
I also have to thank my buddy Rob, he put a lot of time and labor into getting the trailer in like new condition.
Sorry don't have photos at the moment.


The diagram that is shown below has incorrect dimensions. After all the hangers were mocked up as the given dimensions show the axle center to center distance was 29" not 30". I actually over looked double checking the center to center measurement and had to cut the center and back hangers off and will be moving them.


These were an exact replacement for my old trailer and have performed well the past year!

They are still performing but are very rusty. I should have put my own paint on them to prolong their life.
JCFOhio - 07/10/2018


parts were of excellent quality. smooth transaction, and super fast shipping, A great company to do business with..


I bought a shackle kit for my car trailer and everything fit absolutely perfect. Super easy to install. I would buy another if I ever need one.


Product was exactly as shown. Quality appears fine. Product shipped quickly and was delivered on time as promised. Michelle S. wen out of her way to get order processed as quickly as possible so we would get it when we needed it at the most affordable delivery price. This is our first order with and we will definately use them again.


The parts have worked out very well and have not had any problems. Thanks again for the parts and good service.

Sorry it took so long to answer but have been real busy. My daughter is veryhappy with the parts that we have gotten from you and things are still good. Thank you for asking,
Millard J - 12/11/2017

Show More Reviews

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

  • Tandem Axle Suspension Kit Recommendation that Uses 6-1/4 inch Long Equalizers
    We have a kit that uses equalizers that are 6-1/4 inches in length. For that you would want part # APT4. This leaf-spring mounting kit includes 3-1/4" tall front hangers, 5-7/16" tall center hangers, 3-1/4" tall rear hangers and necessary hardware.
    view full answer...
  • Axle to Frame Height Difference Between Tandem Axle Hanger Kits # APT3 and # APT5
    We don't have CAD drawings we can give out for our hanger kits but I can help give you info to help you determine what the height of your axles relative to your trailer frame would be with each kit. With the part # APT5 it will give you approximately 4-1/2 inch to 5 inch of clearance and the part # APT3 will give you approximately 3-1/2 inch to 3-3/4 inch.
    view full answer...
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  • Picking Out Replacement Double Eye Springs for 1,720 lb Trailer
    When replacing trailer leaf springs we strongly recommend you replace them in pairs. I would urge you to get a set of matching properly rated springs for your trailer as soon as possible. If you look on the frame of your trailer there should be a plate with the trailer VIN number and the axle capacities of the trailer. You will want to pick leaf springs that are as close to the axle capacity as possible. I attached a link to a page that has all of the 2k rated double-eye springs we carry...
    view full answer...
  • What to Consider When Converting Single Axle Trailer to Tandem Axle
    You can convert a single axle trailer to a tandem axle but it's more extensive than just putting the extra axle on there. The current axle does need to be repositioned for proper tongue weight. You will also need to cut off the current hangers since the hanger spacing will not be the same. I've attached a chart that you can use to determine the axle placement. You'll need to the axle's weight capacity and diameter as well as the length and type of springs. Then we can determine exactly...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Suspension that Shackle and Equalizer Flip Over
    First thing you want to do is verify that you are using the correct dimensions for your hanger spacing on your trailer. The distance between the center hanger and either of the outside hangers should be right at 29-1/2 inches. There should be at least 3-1/2 inches from the center of the axle o the trailer frame. Also, you need to make sure your trailer is being towed level. If your trailer is nose high or low that can cause the suspension of a tandem axle trailer to be unbalanced. I attached...
    view full answer...
  • Why Is Trailer Suspension Shackle Angled and Not Totally Vertical
    You'll want the shackle hanging at a slight angle so that it doesn't want to flip upside down at any point. If it's totally vertical it will want to flip over much easier. Adding an axle certainly could be done while still using the old axle. It would be a matter of getting a tandem hanger kit like part # APT3 with the new axle.
    view full answer...
  • How to Pick Out Replacement Suspension Components for a Trailer
    I tried looking up info for Tahoe trailers made in 2001 but since there were several different models made in that year of various sizes and weights I won't be able to give you a specific answer. I was able to determine that you do have a tandem axle setup on your trailer since all of the trailers they offer are tandem. First you will want to pick out the correct leaf springs. To do that you will need to know the length of your leaf springs as well as the axle capacity. Try to measure...
    view full answer...
  • Why Do Trailer Hanger/Equalizer Kits all Use Different Height Suspension Hangers
    When the suspension hangers, equalizers, and shackles are installed from a kit like the part # APT3 the goal is to have the leaf spring as level as possible. The different height hangers is offset by the height of the equalizer and shackles so that when it's all said and down everything is at a level height. Check out the picture I attached of a kit like this installed to get an idea. The great thing about these kits is that the correct height of everything is already all worked out.
    view full answer...
    Image 1 for
  • What is the Torque Spec Rating for 9/16 Inch Diameter Shackle Bolts
    There is not a specific torque spec for shackle bolts including the ones in the Tandem-Axle Trailer Hanger Kit part # APT3. They need to be secure but if they are too tight then the leaf springs will bind and cause problems in your trailer's suspension. The lock nuts included with the kit will ensure the bolts do not fall out. I recommend tightening the nuts until they makes contact with the shackle strap and then add another 1/4 turn. This should give you the right amount of torque needed...
    view full answer...
  • Where to Place Axles on 14 Foot Long Tandem Axle
    To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger. For example, if the trailers frames length is 14 feet, then the center-line location...
    view full answer...
    Image 1 for
  • Will Equalizer of Trailer Suspension Tilt When There's Elevation Change on Trailer
    As long as they are level when the trailer is level you are probably fine. The equalizers are designed to pivot and equalize the load of the trailer on the axles when there's an elevation change so what you decribed is very normal.
    view full answer...
  • Replacement Hanger Kit for Trailer with 7-3/4 inch Wide Equalizers
    For a hanger/equalizer kit that comes with the same size equalizers you have now the # APT3 would be a great option. It comes with everything needed from the equalizers, the hangers, shackles, and bolts. The price is available at the link below.
    view full answer...
  • How To Determine Axle Placement On Single Axle Trailer Being Converted To Tandem Axle
    Not necessarily. You will want to follow the included link to a helpful article that goes over proper placement of tandem axles. In short you will want the front axle in a location that makes the tongue weight 10-15% of the trailer weight. It may take a few tries to get the correct location. Once the axle location is set then you can have a qualified welder fully weld the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center # APT3 you were looking...
    view full answer...
  • Why is Center Hanger Longer for Tandem Axle Trailer Hanger Kit
    The center hangers in the Tandem-Axle Trailer Hanger Kit # APT8 that you recently purchased are indeed longer. This is actually pretty common for tandem axle trailers. The reason for the extra length on the middle hanger is related to the shackle straps of the equalizer. You want this hanger to be a bit longer to compensate for how the shackle straps move the spring higher up. I have attached an image to better clarify this. It is possible for the shackle to flip like you described, but...
    view full answer...
    Image 1 for
  • Does Trailer Suspension 7-3/4 Inch Equalizer EQ-E1 Have a Weight Capacity
    Equalizer # TREQE1 does not have a weight capacity itself. It isn't bearing much of the weight compared to other components in a trailer suspension set up. If you have a tandem axle trailer then you could potentially use kit # APT5, # APT3, # APT9, # APT8, # APT7, or # APT3HD. All of these kits have the 7-3/4 inch long equalizers. For a triple axle trailer you could use # APTT5 or # APTT3. All of the above kits also come with hangers. If you do not need hangers then you would need to...
    view full answer...
  • Tandem-Axle Trailer Hanger Kits For Double-Eye Leaf Springs With Different Height Hangers
    Spring hangers are only to be mounted with the base of the U facing the frame. We do offer an array of different kits for a tandem axle trailer listed below or you can also find the hangers individually. If you can offer me some measurements of your current hangers and what amount of rise or drop you are looking to achieve I can give you my recommendations. Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-1/4" Tall Front/Center/Rear # APT5 Tandem-Axle Trailer Hanger Kit for Double-Eye...
    view full answer...
  • Why are Trailer Center Hangers of Tandem Axle Hanger Kits Longer
    The longer hangers are the center hangers. The reason they are longer than the end hangers is because the shackle straps of the equalizer. It is somewhat hard to explain, but the longer center hanger is to compensate for how the shackle straps move the spring up higher. Check out the picture I attached for more info. Hopefully that explains it better. Leaf springs typically can only travel a few inches. So you won't gain much travel by going with longer hangers.
    view full answer...
    Image 1 for
  • Does the Hanger Kit part # APT3HD Get Welded or Bolted to Trailer Frame
    Suspension hangers like what come with the Hanger Kit part # APT3HD that you referenced are designed to be welded to the trailer. You would not want to bolt this kit to the frame of your trailer.
    view full answer...
  • Minimum Clearance Between Tires on Tandem Axle Trailer
    It is possible that the 10K axles that were retro-fitted to your trailer also had larger diameter wheels/tires installed on them to take advantage of the new axles' higher weight capacity. The bare minimum tire spacing on a tandem axle trailer is 2-inches unloaded and 1-inch when loaded. It looks like your unloaded trailer has at best 1-inch spacing and this is not enough. You will need to either switch to smaller diameter wheels and/or tires (which may have a lower weight rating) or...
    view full answer...
    Image 1 for
  • Parts Needed to Rebuild Suspension and Axle Placement on Gooseneck Trailer
    To start with, the 6,000 pound springs I suggest are # SP-111275. They're 25-1/4 inch long, 5 leaf springs. I recommend either hanger kit # APT3 or # APT5 with the springs. The difference between the two hanger kits is the height of the hangers. With either kit it's recommended to space the hangers 29-1/2 inches apart and the axles 33-1/2 inches apart. See the diagram I attached. You'll need to position the axles so that 10 percent of the trailer's total weight is on the tongue. ...
    view full answer...
    Image 1 for Image 2 for
  • Availability of Leaf Spring Hanger/Equalizer Kit for Springs that are 2 inches Wide
    We have tandem axle slipper spring hanger/equalizer kits like with the part # APT6SE but if the leaf springs are double eye springs we don't have anything based on your width.
    view full answer...
  • Recommended Spring Hanger Kit for Load Rite Boat Trailer 3X5 Box Frame, 7200 lbs Gross Suspension
    There are a lot of variables to consider when selecting a hanger kit. First you should select a kit that will accommodate the wheel and tire combination you are using. The # APT3 kit is a good choice for smaller wheel and tire combinations like 14 inch wheel and tire combinations and the # APT5 kit would be a good choice for 15 or 16 inch wheel and tire combinations since it provides a bit more clearance for tire height. The # APT7, # APT8 and # APT9 hanger kits are typically used as replacement...
    view full answer...
  • How to Decide Which Tandem Axle Trailer Hanger Kit to Use
    Typically when building a tandem axle trailer I recommend using either the # APT3 or # APT5 Tandem-Axle Trailer Hanger Kit. These are the most common kits used for utility trailers and parts are readily available. The # APT5 kit is by far the most common because all the hangers are the same height and provide good tire clearance. There are a lot of variables when selecting a hanger kit. First you should select a kit that will accommodate the wheel and tire combination you are using. The...
    view full answer...
  • Tandem Axle Hanger Spacing for Double Eye Springs 25-1/2 Inches
    For your double eye springs that are 25-1/2 inches, it is likely your hangers are 29-1/2 inches apart on center and your springs most likely were originally 25-1/4 inches as they will stretch slightly over time. For instance if you were to use 25-1/4 inch springs like # SP-111275 then you could use tandem axle trailer hanger kit # APT5 and use either spacing 29-1/2 inches on center for a good fit.
    view full answer...
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Info for this part was:

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