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Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear, 5-7/16" Center

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear, 5-7/16" Center

Item # APT4
Our Price: $152.23
Trailer Suspension Parts
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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. Equalizers are 6-1/4" long. Components for mounting axle to springs sold separately. Great Prices for the best trailer suspension parts from Redline. Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear, 5-7/16" Center part number APT4 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (34)
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Redline Trailer Suspension Parts - APT4

  • Hangers
  • Suspension Kits
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Double Eye Springs
  • Tandem Axle
  • Redline

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. Equalizers are 6-1/4" long. Components for mounting axle to springs sold separately.


Features:

  • Attaches 4 leaf springs (sold separately) to your trailer frame
  • Includes:
    • (4) 3-1/4" Tall front and rear hangers (28-5)
    • (2) 5-7/16" Tall center hangers with 3/4" bolt holes (115919)
    • (2) 6-1/4" Long curved equalizers (TREQ458)
      • 3/4" Diameter center hole for mounting to hanger
      • 9/16" Diameter end holes for attaching to springs
    • (8) 2-5/8" Long shackle straps (115052)
    • (12) 3" Long x 9/16" diameter shackle bolts (9163B)
    • (12) 9/16" Diameter locknuts (916DLN)
    • (2) 3-1/2" Long x 3/4" diameter wet equalizer bolts (126A1LN)
    • (2) 3/4" Diameter castle nuts (165093)
    • (2) 2-1/4" Long cotter pins (165649)
    • (2) 1/8" MPT grease zerks (1610)
  • Designed for use on trailers with tandem, 2,000-lb to 7,000-lb axles
  • Does not include components for mounting axle to springs


APT4 Tandem Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs





Customer Satisfaction Score:


Customer Reviews

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear, 5-7/16" Center - APT4

Average Customer Rating:  4.6 out of 5 stars   (34 Customer Reviews)

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. Equalizers are 6-1/4" long. Components for mounting axle to springs sold separately.

by:

I spoke with Trevor, Thursday the 11th, I have 1set, 2 PCs, of shackle straps that are shorter than the other 6 shackle straps. I have been waiting for An email from Trevor, have not received it. Could I get the correct straps sent 2 PCs needed. Thanx

Etrailer Expert

Jenny N.

5/16/2023

I checked and I see that we are having the correct shackle straps sent out to you. Thank you for letting us know.



by:

I have ordered from Etrailer a few times now, The service is always great and fast shipping. They have the best prices around. Where I live I have 24 miles of rough dirt road so am always replacing parts on my trailers. Their products hold up to the test of my road. Always a perfect fit too!

Frank L.

8/17/2015

everything is still holding up very good! Thank you guys for the excellent service!



by:

This hanger kit and leaf springs for my tandem boat trailer was PERFECT! I did one side at a time. Once we got the old crap off the trailer, reassembly was a snap. It took about three hours from start to finish. Most of the time was spend removing the frozen center bolt from the old equalizers. I'm very happy I opted for the two center bolts to be "wet bolts". Thanks again, I would definitely recommend etrailer to my friends. Regards, Bob

Xrmartin-daytona

3/16/2017

Still PERFECT



by:

Thank You for getting me back on the road quick , Awesome product thanks for the fast shipping, thank you Ed.



by:

Kit purchased to repalce damaged components on an existing 70's era trailer. The complete hanger kit was cheaper than purchasing the individual parts I needed. The hangers were not used but the equalizers, shackels, and bolts were direct replacements to restore my trailer to tip top shape. I added some nylon spring eye bushings to complete the job!



by:

Everything went together well. The trailer is working fine now

Daniel N.

12/15/2021

everything is still holding together and working fine



by:

I was very pleased with the quality of the APT4 kit I received . I had a small issue due to the kit was short 2 bolts and nuts. Etrailer toke care of the issue promptly by sending the missing parts with out question. I would use etrailer for all my future needs.



by:

Product was just as advertised. Nice to just order a kit and not have to worry about forgetting something. My only complaint was the packaging as everything was just loose in a cardboard box. Surprisingly nothing fell out in transit considering all the nuts, zerks and cotter pins were rolling around and there was a hole in the side of the box.



by:

Disappointed with the Made In China for the equalisers though quality seems to be ok.

Weld on pressings for the shackles and straps were poorly finished, with sharp edges that needed finishing before assembly/paint prep. Country of origin unknown.



by:

We have bought these hanger kits from etrailer before and are very happy with the product. Their shipping is quick and the value is exceptional.



by:

Impressed with quality of parts. Customer service was awesome in helping me find the right parts. Definitely will do business in future.



by:

I have ordered from etrailer many times and they are always prompt with their shipments and the parts arrive as ordered. Customer service A+.



by:

The bushings seem cheap but otherwise seems to be solid.



by:

Package arrived on time. All items in great shape. I'm looking forward to doing business with ETrailer in the future. Walker



by:

Good value. Very complete kit of everything you need at a great price.

Kraig H.

7/12/2020

Product has been trouble free and held up very well.



by:

Very good Quality.



by:

Excellent product, would purchase again



by:

VERY quick shipment and everything is perfect!! What a great company to deal with.



by:

Great products and prices.



by:

The item was a high quality at a great price. Shipping was fast. Communication was excellent.



by:

High quality, perfect fit. Can't beat the price.



by:

The product came exactly as described, fast shipping, I was very pleased with service!



by:

Everything I bought looks amazing, I can’t wait to install, all quality looking parts



by:

Just finished welding these up. Great quality. Bends are aligned and square!



by:

Fast delivery and just as discriced


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See what our Experts say about this Redline Trailer Suspension Parts

  • Replacing Trailer Leaf Spring Hangers
    Thank you for including your diagram, but unfortunately some of the information is not legible. In any case if you are replacing existing parts with different ones you will want to mock up the suspension set-up by first just tack welding the hangers. This will enable you to see if the whole system fits together and if you need to select a new equalizer. The linked diagram provides general axle placement guidelines for new construction. Generally, you want the eye of your spring to be...
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  • How Much Space Should be Between the Top of the Axles and the Bottom of a Boat Trailer
    Normally when using hanger kit # AP233-H248 with spring # e66SR the distance from the bottom of the frame to the center of the axles is going to be approximately 4-1/2 inches. Subtract half the width of the frame then to the top of the axles that would be 3-5/16 inches. Two inches might work out fine depending on how far the suspension travels but more height would likely be needed considering the heavier load. Hanger kit # APT4 would provide more height since it has taller hangers than...
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  • Way To Raise Trailer Suspension When Axles are Under Leaf Springs
    If your axles are currently under the leaf springs then an over-under kit would not be the correct product to use as it would not actually raise your trailer. It would lower it. If you cannot use an over/under conversion kit then the only other way to raise the height of the trailer is to have the old suspension hangers cut off and new, taller ones welded on by a qualified professional welder. I have included a link to the hanger main page for you. You can also try raising the pin box...
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  • Replacement Suspension Kit For Tandem Axle 1 3/4 Springs With 7-3/4 x 2-7/8 Inch Equalizers
    In order to retain your current suspension geometry, you'll need to use an equalizer of the same length and height as the 7-3/4 x 2-7/8 equalizer you currently have. The Dexter Axle # K71-449-00 offers equalizers that are the same width and height as what you have now. The only difference is that the shackle links are a tiny bit shorter, at 2-1/4 inches versus the 2-1/2 you currently have. This difference is very small and won't be enough to have a negative effect on your suspension geometry. Thanks...
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  • Hanger Spacing Recommendation for Using Trailer Leaf Springs SP-053275 with Hangers APT4
    When using the trailer suspension hanger kit part # APT4 with a leaf spring that is 26 inches long like the part # e94SR you will want to have the hangers spaced 30-1/4 inches apart.
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  • Recommended Axle Over/Under Kits To Tow Fifth Wheel Trailer Level
    The problem you have is becoming more common with the higher bed sides on trucks. One of the most common solutions is to install an over/under kit on your axles on the fifth wheel trailer. We have two kits available I recommend. These kits move the trailer leaf springs to the top of the axle. If you have 2-3/8 inch axles the kit I recommend is part # K71-384-00 and if you have 3-inch axles on your fifth wheel trailer the kit you need is part # K71-385-00.
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  • Adding Lift To 2003 Jayco Single Axle Tent Trailer
    I spoke with my contact at Jayco about your 2003 single axle trailer. There is no lift kit available but we may have an option for you. If your 1-3/4 inch axle is round and you have underslung leaf springs, I recommend installing a new spring seat on top of the axle, like the Spring Seat for Typical 2000-lb, Round Trailer Axles, part # TRSS175. Simply flipping the axle is not an option because axles are made with a slight arc so that they can handle the load on the trailer. When placed...
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  • Trailer Suspension Hanger Kit with the Most Lift for Tire Clearance Under the Trailer Bed
    The # APT4 Tandem-Axle Hanger Kit will provide about 4 inches of clearance from the center of the trailer axle to the bottom of the trailer frame, with no load on the axle. This is assuming that your axle tube is 3 inches diameter. If your axle tube is smaller the height will be sightly less. The curve of the springs you select will have some affect also. I would recommend that you go with the APT5 hanger kit because all of the hangers are the same height and it will make it easier to...
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    Image 1 for
  • Options to Level a Fifth Wheel Trailer that is Being Towed by a Taller Truck
    The easiest solution would be if you could lower the head of your fifth wheel hitch, or raise the pin box of your trailer. Either of these options should allow your trailer to sit more level. You would want to make sure you have between 4-6 inches from the overhang of your trailer to the bedrails though. Another option you have would be to move your axles to below the leaf springs. This is the most common way to lift a fifth wheel trailer to allow the trailer to be towed level if the hitch...
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  • Will 5-7/16" Tall Center Hanger for Double-Eye Springs Work with 9/16" Bolt
    Even though the 5-7/16" Tall Center Hanger for Double-Eye Springs # 115919 has a 3/4" diameter bolt hole, this is actually designed to work with 1-3/4" wide double-eye leaf springs that install using 9/16" diameter bolts which I think is what you're getting at, so this should work perfectly for your application! If you check out the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs # APT4 you can see where these same hangers are used in a kit that comes with 9/16" bolts so having that...
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  • Over Under Kit Recommendation for Lifting a 1986 24 ft Dual Axle Jayco
    Since your axle is 2-3/8 inches in diameter you would want the over/under kit part # K71-384-00. This kit will raise your trailer the diameter of the axles (2-3/8 inches) plus the thickness of the leaf springs you have on your trailer.
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  • Recommendations for Lifting Travel Trailer About 3 Inches
    To raise your travel trailer about 3 inches, your best option is to use an over under kit like # K71-384-00 for 2-3/8 inch diameter axle or # K71-385-00 for a 3 inch axle. These kits will convert your axle and suspension so the axle will be under the leaf springs so it will raise your trailer the diameter of your axle plus the height of your leaf spring stack. Another option is the Lippert Components Center Point by Trailair Air-Ride Suspension Upgrade - Tandem Axle # LC1565391 which...
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  • Correct Hanger Spacing For The APT4 Kit Using 25-1/8 Long Leaf Springs
    The hanger spacing for the # APT4 with 25-1/8" leaf springs is 27-3/4" on center. I have attached a drawing for your reference.
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  • Can a Trailer with Axles Under Leaf Springs Be Lifted Further
    If you already have your axles mounted below the leaf springs the only way you can add height to a trailer is to go with taller hangers for the suspension. You would need to have the old suspension hangers cut off and new, taller ones welded on by a qualified professional welder. I have included a link to the hanger main page for you.
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  • 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...
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  • Troubleshooting Rear Tires Wearing on Inside for Dual Axle 5th Wheel Trailer
    Thank you for all of that information. From everything that you described it sounds like you are overloading your rear axle. Even though your axles are rated for 8K each and you only have 12,420 lbs on your axles, if your rear tires are wearing on the inside tread then you have too much weight over the rear axle and you need to adjust cargo around in your 2019 Grand Design 367 BHS Reflection 41. Axles naturally have an arced shape and when they are weighed down correctly they straighten...
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  • Hanger Kit For A 6-1/4 Inch Equalizer
    When it comes to replacing your hangers on a tandem axle that has equalizers that are 6-1/4 inches long you would need The Tandem-Axle Trailer Hanger Kit for Double-Eye Springs # APT4. This Leaf-spring mounting kit includes 3-1/4 inch tall front hangers, 5-7/16 inch tall center hangers, 3-1/4 inch tall rear hangers and necessary hardware. Equalizers are 6-1/4 inch long. This kit is designed for use on trailers with tandem, 2,000 pound to 7,000 pound axles. To determine the proper placement...
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  • Is Welding Required to Install the Tandem-Axle Trailer Hanger Kit # APT4 on a Trailer
    Yes, you will need to have a qualified welder weld on the hangers of the Tandem-Axle Trailer Hanger Kit # APT4 on your trailer.
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  • Tandem Axle Trailer Suspension Hanger Kit with 8 Inch Long Straight Equalizers
    The tandem axle version of trailer suspension hanger kit # APTT1 is actually # APT1. I have also included a link to all of the tandem axle kits we have.
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  • Getting More Ground Clearance on a 2012 Lance 1575 Travel Trailer or Other Trailers
    I have a couple of options that will give you more ground clearance depending on how your 2012 Lance travel trailer is set up. First, if the trailer uses double-eye leaf spring suspension AND the axles are on top of the leaf spring stack, AND if you have a 2-3/8 inch diameter round axle, you can use over/under conversion kit # K71-384-00 to move the leaf spring stack to the tops of the axles. For a 3 inch diameter axle use # K71-385-00. If the trailer does not fit the criteria above then...
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  • 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....
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  • 5th Wheel Trailer Rides High In the Front When Connected to a 2015 Ram 2500 4x4
    You covered the basic ways of adjusting the height of a 5th wheel trailer (lowering the hitch and raising the pin box). And since the axles are already below the leaf spring stacks there is one other thing that you can do to get more height at the rear. You can have the existing suspension hangers cut off and new, taller ones welded on. We have several heights of hangers available and I have included a link to the hanger main page for double eye leaf springs for you. The cutting and welding...
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  • Is It Possible to Move Square Axles Below Leaf Springs
    Based on the picture you submitted that shows a square axle welded to a mount which is then welded to a leaf spring you would need to have someone qualified use a cutting torch to remove the mount from the spring so that you could then use a u-bolt style of mounting kit to attach the spring on top of the axle. To do this you will need to know the dimensions of the axle. We have kits for square axles that range from 1-1/2 inch square axles up to 2 inch axles. Once you determine the size...
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  • How to Determine where to Place Axles on a 17 Foot Car Trailer or Any Trailer
    Placement of the axles depends on several factors and there is a formula that you can follow to determine the best placement of the axles. Take a look at the picture I have included which explains how to determine where axles should be placed. Once you have the axle locations determined you can look at what hanger kit will work best for you. I have included a link to the options for you.
    view full answer...
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