Peterbilt Low Air Suspension Rear Leaf Spring 75-163

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Peterbilt truck rear leaf spring part number 75-163. OEM leaf part number 03-07640.

  • Number of Leaves - 2
  • Leaf Spring Width - 3-1/2"
  • A - Leaf Spring Length: 24"
  • B - Leaf Spring Length: 18-7/8"
  • C - Leaf Spring Arch: 15-1/2"
  • D - Leaf Spring Pack Thickness: 2-3/4"
  • Leaf Spring Eye Bushings: Front HK-1 Up / Rear HK-2 Down
  • Leaf Spring Capacity: 20,000 lbs.
  • OEM Part Numbers: 03-07640
  • Material: 1/1.50 Full Taper
  • Location - Rear
  • 3 End Holes


Leaf spring 75-163 fits the rear of Peterbilt low air leaf suspension heavy duty trucks. This spring is 3-1/2" wide, is a single full taper leaf spring and has a 20,000 lb. capacity. The OEM part number is 03-07640.

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