2017-2021 Ford F250SD & F350SD 2 Wheel And 4 Wheel Drive Rear Leaf Spring 43-2109

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Ford rear leaf spring part number 43-2109.

  • *Diagram Spring May Differ From Actual Spring*
  • Number of Leaves - 3 (2/1)
  • Leaf Spring Width - 3"
  • A - Leaf Spring Length: 33-3/16"
  • B - Leaf Spring Length: 33-3/16"
  • C - Leaf Spring Arch: 8-1/2"
  • D - Leaf Spring Pack Thickness: 2-1/16"
  • Leaf Spring Capacity: 2,780 lbs.
  • Leaf Spring OEM Number: HC3Z5560M
  • Leaf Spring Eye Bushings: Front RB-373 / Rear RB-309
  • Includes Front and Rear Eye Bushings
  • Leaf Spring Material: 2/499 2ND 1/910
  • Location - Rear
  • With Single Rear Wheels


Leaf spring 43-2109 is the rear spring on 2017-2021 Ford F250 and F350 Super Duty trucks. The rear spring is 3" wide, is a 3 (2/1) leaf spring and the capacity of the spring is 2,780 lbs. The OEM part number is HC3Z5560M.

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