1984 - 2021 Kenworth C500, C550B, K100E, T400, T450, T600 And T800 Front Leaf Spring - 3 Leaves - 59-400

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Kenworth front leaf spring part number 59-400.

  • Number of Leaves - 3
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 32"
  • B - Leaf Spring Length: 32"
  • C - Leaf Spring Arch: 4-15/16"
  • D - Leaf Spring Pack Thickness: 2-1/2"
  • Leaf Spring Capacity: 6,560 lbs.
  • Leaf Spring OEM Number: K223-1073
  • Leaf Spring Eye Bushings: Front TB-68 / Rear TB-68
  • Leaf Spring Material: 3/.788 Full Taper
  • Location - Front


Leaf spring 59-400 is the front leaf spring on Kenworth C500, C550B, K100E (with set back axle), T400A, T400B, T450, T450B, T600A, T600B, T800 and T800B heavy duty trucks. The front spring is 4" wide, is a 3 full taper leaf spring and has a capacity of 6,560 lbs. The OEM part number is K223-1073.


Models And Year Ranges:

Fits: 1988-2021 Front Kenworth C550 and C550B

Fits: 1984-2003 Front Kenworth K100E (With Set Back Axle)

Fits: 1988-2003 Front Kenworth T400A, T400B, T450 and T450B

Fits: 1985-2004 Front Kenworth T600A, T600B, T800 and T800B

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