Code: 20015S4UH

LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-bolt & Hanger Kit

(6 customer reviews)


In stock

In stock

SKU: 20015S4UH Categories: , ,


  • 1,750lbs capacity per each spring, for standard 3,500lbs trailer axle,Eye to Eye length: 25-1/4 inch, Free open: 3 inch, width of leaf: 1-3/4 inch, 4 leaves, 9/16 inch bushing dia, nylon bushings installed
  • It will replace SW4B / 72-42 / LIB-401-DE / UNA212 / PR4B / 124903 / 9150014 / 93184 (different SKU# but same spring)
  • Include 3,500lbs axle U-bolt kit for 2-3/8″ dia round trailer axles , Kit include: 4 x 5-1/2″ long U bolts, U bolts dia. 1/2″; 2 x tie plates for 1-3/4″ leaf springs; 8 x 1/2″-20 hex nuts
  • Include Complete tandem trailer axle hanger kit for 1-3/4″ leaf springs, Kit include: 2 x EQ-E1 equalizers, 6 x 3″ tall hangers, 8 x shackle straps, 14 x 9/16″-18 x 3″ long shackle bolts and locknuts
  • LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers.

Additional information



Leaf Spring

1750 lbs



6 reviews for LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-bolt & Hanger Kit

  1. Ryan Robinson

    The u bolts were to small for axle diameter.: I liked everything was in one kit. I didnt like the u bolts were too small. Wrong axle tube diameter. Maybe it says that in the listing idk but couldn’t use those or the mount plates.

  2. NHG

    Good value, all the parts were included: As desribed by seller

  3. daknee

    It’s all there: Nice complete kit. All the nuts and bolts are included. Just welding the hangers on now so unless things go terribly wrong, my trailer should be all refreshed soon!

  4. Hannah Thorpe

    Good fit: replaced on 16′ tandem axel flatbed trailer- 30 years old. Time will tell on quality and duration of these new ones

  5. PG3O

    as expected: lots of options to choose from. see to it you get what you need. but it went together as expected, and works great.

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