1981 - 1986 Navistar International & Caterpillar 5870 Series, Paystar 5000 And HX Series Front Leaf Spring 55-956

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Navistar international front leaf spring part number 55-956.

  • Number of Leaves - 8
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 27"
  • B - Leaf Spring Length: 29"
  • C - Leaf Spring Arch: 3-5/8"
  • D - Leaf Spring Pack Thickness: 4-7/16"
  • Leaf Spring Capacity: 9,000 lbs.
  • Leaf Spring OEM Number: 543847C92
  • Leaf Spring Eye Bushings: Front TB-26 / Rear Slipper
  • Leaf Spring Material: 8/.558
  • Location - Front


Leaf spring 55-956 is the front leaf spring on Navistar International 5870 Series, Paystar 5000, HX615 and HX620. Also fits Caterpillar CT660, CT680 and CT681. The spring is 4" wide, is 8 leaf spring with slipper end type and has a capacity of 9,000 lbs. The OEM part number is 543847C92.

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