One new trailer leaf spring: double eye, 4-leaf, 1,750 lbs for 3,500 lbs trailer axle. This is the most commonly used standard spring for 3,500 lbs trailers in the market.

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Product Review

One new trailer leaf spring: double eye, 4-leaf, 1,750 lbs for 3,500 lbs trailer axle. This is the most commonly used standard spring for 3,500 lbs trailers in the market.

  • It will replace SW4B / 72-42 / LIB-401-DE / UNA212 / PR4B / 124903 / 9150014 / 93184 (different SKU# but same spring);
  • One spring with 1,750 lbs capacity for standard 3,500 lbs trailer axle;
  • Eye to Eye length: 25-1/4", free open: 3", width of leaf: 1-3/4", 4 leaves, 9/16" bushing dia;
  • 2 bushings installed, 9/16" bushing dia;

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