Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear

Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear

Item # APT5

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Trailer Leaf Spring Suspension

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Shipping Weight: 21 lbs

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APT5 - Tandem Axle etrailer Trailer Leaf Spring Suspension
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Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size. Lowest Prices for the best trailer leaf spring suspension from etrailer. Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear part number APT5 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (149)
  • Q & A (105)
  • Videos (1)
  • Photos
  • Why etrailer?

etrailer Trailer Leaf Spring Suspension - APT5

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

Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size.


Features:

  • Suspension kit lets you attach 4 double-eye leaf springs (sold separately) to your trailer frame
    • Use table below to determine hanger location based on type of leaf springs
    • Does not include components for mounting axle to springs
  • Front and rear hangers provide secure connection points for springs
  • Center hangers suspend equalizers
  • Curved equalizers evenly distribute impacts across suspension for smooth ride
  • Shackle straps allow springs to pivot within suspension
  • Kit includes
    • 6 Hangers
    • 2 Equalizers
    • 8 Shackle straps
    • 14 Shackle bolts
    • 14 Locknuts
  • Installation of hangers requires welding


Specs:

  • Application: 2,000-lb to 7,000-lb tandem-axle trailers with 1-3/4" wide double-eye springs
  • Clearance between trailer frame and axle (depending on axle size): 4-1/2" to 5"
  • Hanger height: 3-3/4"
  • Equalizer length: 7-3/4" from center of bolt hole to center of center of bolt hole
  • Shackle strap length (from center of hole to center of hole): 2-5/8"
  • Shackle bolt dimensions: 3" long x 9/16" diameter



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"29-1/2"5"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)
29-1/2"29-1/2"33-1/2"4-1/2"3"
(typical 5,200-lb to 7,200-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-S11 Trailer Hanger Kit for 1-3/4" Double Eye Springs - 3-1/4" Tall

Replaces APT5







Video of Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear


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




Video Transcript for etrailer Trailer Suspension - Leaf Spring Suspension - APT5 Review

Toay we'll be reviewing part number APT-5, this is Dexter's tandem axle trailer hanger kit for double wide springs. It's going to attach four leaf springs, which are going to be sold separately, to your trailer frame. You can use the table on this product's product page to help determine the hanger location based on the type of leaf springs that your trailer has. It's going to achieve four and one half or five inch clearance between the trailer frame and the axle, depending on the axle size. So what you see here is what you're going to get: you're going to get six three and one quarter inch tall hangers. That height measurement is taken from the center of this hole location here at the base to the top of the hanger. So it's going to measure three and one quarter inch in height.

You're also going to get two seven and three quarter inch long curved equalizers. All the holes are going to have the same diameter, that's going to measure a diameter of 9/16th's of an inch. The length on those equalizers are measured center on center between these two hole locations, so that's where we're going to get the seven and three quarter inch. It's also going to come with eight two and five eighth inch long shackle straps. Again, that two and five eighth measurement is measured from center of one hole to the center of the other. You're going to get 14 three inch long by 9/16th inch diameter shock-able bolts, as well as 16 nuts.

This is designed for use on trailers with tandem 2,000 pound to 7,000 pound axles, and it does not include the components for mounting the axle to the springs. That's going to do it for our review of part number APT-5, this is the tandem axle trailer hanger kit for double wide springs. .


Customer Reviews

Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear - APT5

Average Customer Rating:  4.9 out of 5 stars   (149 Customer Reviews)

Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size.

- APT5
by:

I'm building a trailer for a gutter machine from scratch. And the parts that I got from e-trailer are exactly what I needed, and on top of that they got to my house 3 days earlier than they were suppose to. I know where to order again if I need some more parts in near future ;) thank you guys 123214



- APT5
by:

I received my order very fast. The quality is excellent and everything that I expected. What is also impressive is that if you have questions about setting up your axle kit, etrailer has printable instructions right on their website that will make installation simple. I have built several trailers over the years and appreciate the quality and service provided by etrailer. I highly recommend this company and their products. 613258



- APT5
by:

I had a trailer with a suspension that needed new bushing and rocker arm. I looked on line and decided on the parts I needed. I called my order in on Sunday evening and explained I needed the parts ASAP. The parts were sent to UPS Sunday evening. I received the parts about 2:00 Wednesday. I have already installed the parts. The suspension is back like new now. 360139


Comments

The product I used on my trailer are doing an excellent job. No problems so far. Thanks for the follow up

William - 04/02/2018

36743

- apt5
by:

Pics of trailer frame. 124955



- APT5
by:

I bought the spring kit to put on my home built trailer that I put my old heavy slide-in camper on. It more than met my expectations. There was no sway at 75mph or on the 5 mile trail back to camp. 625558



- APT5
by:

Just what I needed. The price was right and shipping quick. 728337



- APT5
by:

Everything fit perfectly. Great customer service. 715306



- APT5
by:

I've had the new suspension on my trailer (20' flat bed) for about a year now with no problems, I tow a race car to about 20 to 25 events a year. All the parts fit perfect and are holding up well. Next on the list to do is a complete brake upgrade I will definitely get the parts from etrailer.com.  706958



- APT5
by:

I ordered several things from etrailer 2Axle hanging kit + u bolts and 4 pro grip retractable anchors. Every single thing inside of the box was well packed delivery was outstanding and the parts are solid. The anchor points fits perfectly on the pocket holes on my 2013 F-150, super easy to install and they are more convenient than the anchor points that came with the truck and sits at the bottom of the bed. I will recommend any of you to buy from etrailer they have great customer service, if you need to buy parts for a trailer I would say that this is the place to go! 713206



- APT5
by:

Good quality parts at good prices. Fast shipping, large inventory, and helpful reps. I found everything I need for my dump trailer project, and received them in a few days. 700666



- APT5
by:

Fast delivery and just what I needed. 678856



- APT5
by:

Very fast, great service. I have used them several times and will come back. 678040



- APT5
by:

Fast shipping great service 671407



- APT5
by:

they fit like a glove. thanks a million. 668750



- APT5
by:

Great product fast delivery will use again . 667930



- APT5
by:

I ordered the shackle and hanger kit along with 4 leaf springs. The order was shipped and delivered quickly with all the parts but the box didn’t fare well. There was 2 of the leaf springs hanging out of the box when it was delivered. Maybe start using better packing and a thicker box for such heavy items. All in all I’m happy with the products and will be ordering again soon. 655913



- APT5
by:

Good quality materials and workmanship. Items were as described and work great on my custom built flat bed trailer project. 654395



- APT5
by:

The items we purchased from etrailer were used to flip the axel on our travel trailer. The parts were perfect for this and the customer service was so helpful in making sure we had everything we needed for the job. 652630



- APT5
by:

Very well manufactured. Should add years to my trailer. Thank you! 643425



- APT5
by:

Etrailer had exactly what I needed and shipped it to me quickly, your efficiency minimized my down time and got us back to work. Thank you etrailer.com 636853



- APT5
by:

it was just what I ordered. And I received it UPS and an excellent timing it didn't take long for shipping they got right on it excellent place to order parts. I bought this to rebuild a utility trailer that I had bought in the parts is in excellent workmanship not cheap made. 619569



- APT5
by:

This worked great for putting a tandem axle under the pontoon trailer. no more sway, as before, with a single torsion axle. I don't have a picture cause the trailer is still in storage, because of 10' of snow this year. 612638



- APT5
by:

We summer at a remote cabin in the Gila Nat'l Forest above Silver City NM. The last 5 miles to the cabin is extremely rough and puts a lot of wear and tear on both my truck and my trailer that we use to transport water, food, building materials and supplies to the cabin on a twice a month schedule. I have had suspension springs break, blown tires and damaged coupler. I ordered this kit to replace the entire hanger assembly because of wear and tear, cracks and loose fittings. I had to re-enforce the frame and weld up some cracks and wear points. The kit was great and worked perfect. The trailer is now like new and will serve me for years to come. 606056



- APT5
by:

Fast shipping and love the Product 598466



- APT5
by:

I want to say thank you to etrailer for getting my trailer axle hanger kit in a timely manner. The website was very user friendly and the customer service rep was knowledgeable and helped make sure I ordered the correct part. Thanks to etrailer, I can get my trailer back on the road ASAP! 594598



- APT5
by:

Suspension parts worked just as expected and shipping was prompt. Good experience. 590029



- APT5
by:

They had just what I needed at a very good price I messed up and ordered the wrong part call them and they sent me the right part and I sent the other back all in less than a week 588683



- APT5
by:

Parts came quickly! The kit had the correct quantity and were packaged neatly. etrailer is my go to place, and they always will be! Thanks again etrailer ! 577301



- APT5
by:

I have no problem with your products. I have built 4 trailer using your product. Now I am going to add a third axle to a dump trailer I bought the same kit for the trailer so it should work together 573300



- APT5
by:

Always a good product with great customer service. Shipping is always right on target or before!! 546336



- APT5
by:

Everything fit perfectly 542269



- APT5
by:

Great service. Shipment came in 4 days. Had everything I needed to replace old worn out supension on my 1995 5th wheeel RV. Shawn my sales rep was great new exactly what I needed for my instalation. Everything fit just like original parts. I will feel a lot better knowing suspension has been replaced. 519988



- APT5
by:

My flatbed trailer is a 1998 and the suspension and wheels were suffering from Pa's use of salt brine on the roads. The wheels had holes rusted through them! Decided it was time to repair the trailer. Got new wheels and suspension parts from E-trailer. Got my parts fast at a good price and well on my way to having a reliable trailer again. Great service and will do business again! 516713


Comments

Year later and trailer is still working great again. PA inspection will be due in a month and everything is still in good shape

Randy - 06/04/2019

56119

- APT5
by:

Everything went really well except it would have been much better had the person that I spoke with on the phone the first time got my order correct so I wouldn't had to waste another day and then return the original order 508325



- APT5
by:

The parts all came as expected and were in good condition. I can upgrade this once I get the trailer together. 505953



- APT5
by:

Very nice product and super fast shippi ng 505361



- APT5
by:

Great parts. Easy installation. Website was easy to use and find what I was looking for. Order arrived quickly 505107



- APT5
by:

Parts changed the trailer from almost unusable to like new condition with many years of use left. 493036


Comments

Trouble free. As good as new.

David - 04/05/2019

51477

- APT5
by:

Exactly what I was looking for to repair an old trailer I purchased. I have never been happier with the personalized attention that I get from the sales person I deal with. 491224



- APT5
by:

Well hello, I dont do many reviews but I will have to say that the people at etrailer are very nice and very easy to deal with and they know there business for sure , I havent installed my parts yet and they arrived dead on time and I knew every step the parts made along the way to me . So far I am very pleased and that is hard to do with me as 99 percent of the time nothing is ever the way suppliers say it going to be until now with etrailer , very nice job guys and thank you and I will be installing everything this weekend and will do another review and will have some pics along the way, And by the way thank ou for keeping the prices affordable for us out here in the field trying to keep our equipment rolling and safe , with your prices no reason to be able to do just that , again great job guys . 485077



- APT5
by:

The springs and shackles are working fine, thank you. 474953



- APT5
by:

Great fit perfectly 468488



- APT5
by:

Looks great and great service 464803



- APT5
by:

Heavy for a little box, cheape than buying individual parts. Thicker than what came on trailer from factory and should last longer. 462238



- APT5
by:

Good quality, still holding up great after a year of hard use. 461036



- APT5
by:

Quick delivery and quality parts at a great price I'm sure I will be ordering again thank you 448116



- APT5
by:

No issues after a year in service 445909



- APT5
by:

Good match, quick shipping, fair price, will use again ,an refer to ithers. 421510



- APT5
by:

I ordered a spring hanger kit for my tandem axle trailer and received it with in 3 days of placing the order. Looks like the parts are all well made and the ordering process and website both were a very easy process. Will definitely order more parts for my trailer in the future. Thanks, Mark L. 414110



- APT5
by:

I was very happy with the very quick response and shipping it. Thank you very much. 413733


Comments

I am sure it was fine since I haven’t heard back form the people that bought the trailer. You see, I am in a wheelchair and since it is hard to get a job, I now rebuild cars, trucks, trailers, tractors, or whatever I find.

Brian S - 08/01/2018

41790
56
155
Show More Reviews

Ask the Experts about this etrailer Trailer Leaf Spring Suspension

Do you have a question about this Trailer Leaf Spring Suspension?


  • Recommended Tandem Axle Hanger Kit For Double Eye Springs
  • If you use the 5-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/4" Long # SP-111275 which have the same capacity, I recommend the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear/Center # APT5 for a tandem axle application. When you follow the attached photo, this will give you the 33-1/2 inch axle spread. For your 6-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 26" Long # SP-053275, you can use the same system but replace the equalizers with...
    view full answer...

  • Changing 3,500 Pound Trailer Axles to 5,200 Pound Axles
  • The first thing to consider is if the axle(s) are actually bent. Trailer axles have a bow in them so they are higher at the center than at the ends. When under load the axles straighten out some. That is part of how they get their capacities. If the axles are bent from damage then that is another story. Like you said the 5,200 pound axles that we have include spring seats that are on the bottoms of the axles. In order to have the spring stacks on top of the axles all you would need...
    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...

  • How to Find the Correct Replacement Equalizer
  • The Tandem-Axle Trailer Hanger Kit for Double Eye Springs # APT5 may have the correct equalizer but you will need to measure the current equalizer to find out. The length from the center of the left-most eye to the center of the right-most eye of your equalizer needs to be the same as the 7-3/4 inch measurement in this kit. Since you said the shackles are hitting the frame I recommend using a kit with a center hanger that is longer than the 3-3/4 inch hanger that comes with Kit # APT5....
    view full answer...

  • Recommended Axles for Two Trailer Builds with 14K Capacity & 7K Capacity
  • For your trailers, I recommend not using a steering axle because there are different requirements for them and your trailers don't need them. If you want to pursue the steering axle you will need to check with your local DMV for requirements. My recommendation is to use a single or tandem axle application for each trailer. If you want to use a single axle for your 7K trailer, I recommend the Timbren Axle-Less Trailer Suspension System - Spindle w/ Brake Flange - Regular Tires - 7K...
    view full answer...

  • Trailer Suspension Kit and Leaf Springs Recommendation for a Tandem Axle Boat Trailer 4,600 lbs
  • As long as you are replacing everything (hangers, springs, hardware, equalizer), then yes, you can use our trailer suspension kit, # APT5. In fact, this is the kit that I recommend for your trailer. The hangers must be welded to the trailer. The holes that you see in the top of the hangers are actually for welding, not bolt holes. For the leaf springs, you will be much happier with the ride quality of part # SP-212275 for 3,500 lb axles. The other springs you referenced are for 5,000...
    view full answer...

  • Recommended Tandem Axle Suspension Kit for Converting to Double Eye Leaf Springs
  • The appropriate vertical height of double-eye leaf spring equalizers and hangers mostly depends on the axle diameter. 2K axles typically have a diameter of 1-3/4-inches. If you were to use a tandem axle kit such as # APT5 which has hangers that are 3-3/4-inches tall and equalizers that match well you'll be all set. It looks like you have just enough room to install this kit, as shown in the linked diagram. You will have about 5-inches of clearance between the trailer frame and the axle...
    view full answer...

  • Recommended Replacement Leaf Springs and Hanger Kit for 8,000 Pound Dual Axle Car Hauler
  • Starting with the leaf springs, I recommend the 3-Leaf Double-Eye Spring # SP-220275. This 3-spring stack measures 25-1/4 inches from the center of spring eye to the center of spring eye. This is a more common spring length for this capacity, so it will be much easier to find an exact replacement down the line when needed. You can then use the Tandem-Axle Trailer Hanger Kit # APT5.. This kit includes 6 hangers, 2 equalizers, 8 shackle straps, 14 shackle bolts, and 14 locknuts. You will...
    view full answer...

  • What Causes Shackle Straps To Flip Below the Equalizer
  • It is not uncommon for the shackle straps to flip once weight is lifted off the suspension but if they do so when you have a load bearing then this will not allow for proper load distribution or suspension travel. The cause of this issue is that the leaf springs are too long, the shack straps are too long, or a combination of both. The best option for you to make sure you get the proper spacing would be to change these parts out. If you can let me know the distance between your leaf spring...
    view full answer...

  • Spacing Measurements for Tandem-Axle Trailer Hanger Kit APT5 & Spring SP-051275
  • When setting up a new trailer suspension it is best to do a mock-up (by clamping or tack welding the parts in place) to allow you to see how the system functions. There are so many variables that is best to test. Typical spacing dimensions for 25-1/8-inch springs are shown in the chart on the page for # APT5. Since the springs you intend to use, 4-Leaf Double-Eye Spring # SP-051275, are 7/8-inch longer than those listed in the chart, you will want to increase the hanger spacing approximately...
    view full answer...

  • Recommend Hanger Kit For A 3,500 Lb. Tandem Axle Car Hauler
  • If this was my personal trailer. I would first start with the trailer's axles. As you mentioned a need for 3,500 lbs axles, I recommend using the Dexter Trailer Axle w/ Electric Brakes part # 35545E-ST-EZ-89. In addition to the dual Dexter axles and 1-3/4" leaf springs like the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles part # SP-212275, I reccomend going with the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs part # APT5. I recommend going with this hanger kit as it will...
    view full answer...

  • Placement of Suspension When Adding Hangers
  • If making a trailer what you need to do is mock up the locations of all suspension components before setting anything because the tongue weight is going to determine the location of your axle, and therefore, your hangers. If you look at the help article I've added on positioning trailer axles there are equations you can use which will help you determine the distances. Without knowing more information such as the hanger kit you are using I would be unable to tell you the locations you...
    view full answer...

  • Suspension Hanger Locations for Dual Axle Dump Trailer
  • There are some measurements missing that are important in giving you the exact positioning. I've attached a couple articles to assist with the dimensions you must calculate to get your precise 35 inch on center axles. Your center hanger will be obviously directly centered between the two axles and then your other two hangers will be spaced identically on each side. Your spring from the center of the outside hanger to spring seat location is the dimension that would be extremely helpful....
    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...
    view full answer...

  • What is Minimum Distance Require between Tandem Trailer Tires When Considering Increasing Tire Size
  • The difference in tire diameter will be an additional 2-1/2 inches going from the 225/75-15 which measure 28.4 to the 235/80-16 which measure 30.9 inches. As a general rule of thumb the minimum safe distance between front and rear tires on the same side of a tandem axle trailer is 4 inches. You would need to measure the distance between your tires currently and subtract 2-1/2 inches. If that dimension then ends up being 4 inches or greater the axle placement could be left alone. Looking...
    view full answer...

  • How to Determine Hanger Spacing for Tandem Axle Trailer Suspension with 26 Inch Springs
  • Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are based on our preassembled kits, so we will use that as a foundation for your setup. First, I would either replace all of the front and rear hangers with 2-1/2 inch tall hangers like part # 115918 or replace just the center hangers with 2-1/2...
    view full answer...

  • What is Ideal Distance Between Suspension Hangers and Equalizer Bolt Centers
  • I'd need to know what the length of your leaf springs are be able to figure out the proper hanger dimensions. What you'll want to do is go with the distance between the hangers that allows the distance between the equalizer side bolt center and the outside hangers to be right near 1/2 inch longer than the distance between the bolt centers of the leaf spring to ensure you get the correct shackle angle.
    view full answer...

  • What is Axle Spread on Wider Spread Tandem Axle Trailers
  • Normally the spread between the wider stance tandem axles is 42 inches. 33 inches is typically seen on the closer stance.
    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....
    view full answer...

  • Availability of 7k Leaf Spring and 5 Spoke Utility Hub for Dexter 7.2k Axle
  • We have leaf springs that will work for you, the PR6 is a 24-7/8 inch 7k rated double eye leaf spring. Then for a hanger kit that comes with equalizers, hangers and hardware you would want the part # APT5. The hub you mentioned is our part # 8-174-5UC3. This comes with bearings. For easy lube caps though you would need the part # RG04-080. I wish we had the axles you are looking for, but we only carry a select few axles at this time and none of them have the dimension/capacity that...
    view full answer...

  • Ideal Leaf Spring Hanger Spacing for Tandem Axle Trailer Using # SP-111275 6000 lb Leaf Springs
  • The spacing will depend on the axle diameter and on which particular spring hanger kit you use. If you have a 6000 lb 3 inch diameter axle, and you're using the # APT5 hanger kit which includes 7-3/4 inch equalizers and 2-5/8 inch shackle straps (which are the correct size for dual axle trailers, 3-1/8 inch shackles are usually used on single axle trailers) , the center to center distance between the front and center and center and rear hanger is 29-1/2 inches. The center to center axle...
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  • Replacement Parts for Karavan Classic Dual Axle Boat Trailer
  • The axles on your Karavan dual axle boat trailer are likely rated for 3,500 pounds. You can verify this by checking the tag or plate on the axle which should list this information along with the part number and length. To pick out the correct leaf spring replacements, you will want to measure the length of the spring without any weight on it. I have attached a link that will take you to our available selection of leaf springs designed for 3,500 pound axles. If you cannot find a length...
    view full answer...

  • 7k Rated Leaf Spring and Hanger Kit Recommendation for Tandem Axle Gooseneck Trailer
  • What you are looking for will be dependent on the leaf springs you end up going with. For 7k rated leaf springs the # SP-198275 would work well for your trailer. Then for a tandem axle hanger kit you would want the part # APT5. I attached a picture that shows the dimensions where the hangers should be installed with the # SP-198275.
    view full answer...

  • Determining Spring Hanger Spacing for Tandem Axle Trailer Fabrication Project
  • Thank you for the measurements you provided and for the photo of your trailer suspension mockup showing the spring components' spacing. As long as your shackles do not hit the trailer frame (you mention 1/8-inch clearance) you should be fine, but if you'd like a bit more breathing room you could increase spacing from 29-1/2 to 30-inches without negatively affecting anything else.
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  • 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...
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  • Tandem Axle Trailer Suspension System Dimensions for Best Function
  • The Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear # APT5 does not have different size shackle straps. They are all 2-5/8 inches from center of hole to center of hole. If your current straps are different lengths, there are a couple of things to look at. The leaf springs may be different lengths, the hangers may not be positioned correctly, or the equalizer may be off-centered. Ideally you can the hangers, springs, equalizer and shackle straps...
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Info for this part was:

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