Shocks and struts dampen suspension movement to keep tires in contact with the road and the ride comfortable.
Hydraulic fluid forced through small orifices inside the shock body resists rapid suspension travel.
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Replacement runs $350–$1500 including parts and 1-4 hours labor. Exact cost depends on vehicle, parts tier (OEM vs aftermarket), and local labor rate.
Expected lifespan is 50,000-80,000 miles. Driving conditions, climate, and maintenance affect real-world life.
Bouncy ride; Nose-dive when braking; Body roll in corners; Uneven tire wear (cupping); Visible oil leak from shock body.
Most modern shock absorbers & strutss are sealed units that get replaced rather than rebuilt. A shop will diagnose, confirm with a load or output test, then swap the unit and verify operation.