1987 - 2006 Navistar International 1000, 2000, 4000 and 7000 Front Leaf Spring 55-158

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Navistar International truck front leaf spring part number 55-158.

  • *Diagram Spring May Differ From Actual Spring*
  • Number of Leaves - 7
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 25"
  • B - Leaf Spring Length: 29"
  • C - Leaf Spring Arch: 4-1/4"
  • D - Leaf Spring Pack Thickness: 3-1/2"
  • Leaf Spring Capacity: 7,200 lbs.
  • Leaf Spring OEM Number: 1667499C92
  • Leaf Spring Eye Bushings: Front RNK / Rear RNK
  • Leaf Spring Material:  7/.499, Bracket
  • Location - Front
  • 9,000 lb. - 20,000 lb. Axles Only


Leaf spring 55-158 is the front leaf spring on 1987 -  2006 Navistar International 1000, 2000, 4000 and 7000 heavy duty trucks. The spring is 4" wide, is a 7 leaf spring with a bracket and has a capacity of 7,200 lbs. The OEM part number is 1667499C92.

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