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Suspension Knuckle

A suspension knuckle attaches the upper and lower suspension components to the wheel support assembly and is the mounting point for the wheel spindle or hub. It is called a “steering knuckle” if it is used in a location requiring the wheel to turn, where the knuckle rotates on the lower ball joint, allowing the wheels to turn left or right. 

Symptoms of a Bad or Failing Suspension Knuckle

  • Uneven tire wear
  • Brake caliper bracket will not secure properly

Suspension Knuckle Related Repair Advice

  • Replacing a suspension knuckle may affect the alignment's settings. We recommend a four-wheel alignment whenever a suspension knuckle is replaced.
  • On disc brake systems, the brake caliper bracket bolts to the steering knuckle. If the treads in the knuckle are damaged, repairs should not be attempted. The knuckle should be replaced.

1 User Comment

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2008 Nissan Altima. Transmission replaced, both front lower control arms replaced, 4 new tires, 2 4-wheel alignments completed with the last one done by the dealer. Car drives, accelerates, brakes straight but will randomly wander left and right. Steering is not loose. Dealer says everything on front is fine. Recommends replacing both rear steering knuckles to START! Cost of $1800. I brought it home and looked myself, everything seems tight with visible cracks in bushings but not rot. What else could be the problem?