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Automotive glossary

Leaf Spring

A leaf spring is a stack of curved steel strips that supports the axle and absorbs bumps, used mainly on pickups, vans and trucks.

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What is Leaf Spring?

It is attached to the frame at both ends with shackles and bushings. It both suspends and locates the axle, which keeps the design simple and strong. Single-leaf and composite plastic springs are lighter alternatives.

How it works

The leaves flex under load; more leaves or thicker leaves give a higher load capacity.

Why it matters for your car

Broken leaves, worn shackles and sagging springs cause a lower ride height and poor handling. Squeaks often come from dry leaves or worn bushings.

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