1970 - 2017 Navistar International & Caterpillar 9370, 9300, 5050SF-5070SF, 5500 and 5500i Front Leaf Spring 55-964

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Navistar International and Caterpillar front leaf spring part number 55-964.

  • *Diagram May Differ From Actual Spring*
  • Number of Leaves - 4 (PD/4/SHOCK EYE)
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 25"
  • B - Leaf Spring Length: 29"
  • C - Leaf Spring Arch: 5-3/16"
  • D - Leaf Spring Pack Thickness: 4"
  • Leaf Spring Capacity: 8,050 lbs.
  • Leaf Spring OEM Number: 584647C94
  • Leaf Spring Eye Bushings: Front TB-26 / Rear TB26
  • Leaf Spring Material: Pad/.323, Full Taper 4/.788, Shock Eye/.323
  • Location - Front


Leaf spring 55-964 is the front leaf spring on Navistar International 9370, 9300 5050SF-5070SF, 5500 and 5500i heavy duty trucks. Also fits Caterpillar CT680 and CT681. The spring is 4" wide and is a 4 leaf full taper spring with 1 pad and a shock eye. The spring capacity is 8,050 lbs. and the OEM part numbers are 584647C94 and 462-5614.


Models And Year Ranges:

Fits: 1970-1999 Front Navistar International 5050SF-5070SF

Fits: 2000-2016 Front Navistar International 5500 And 5500i

Fits: Front Navistar 9300 And 9370 (Conventional) (With Set Forward Axle)

Fits: 2012-2017 Front Caterpillar CT680 and CT681

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