MacPherson Strut Suspension:

In a strut suspension, the strut assembly usually contains a spring seat to retain the coil spring that supports the weight of the vehicle. The strut is attached at the bottom to the lower control arm and at the top to the vehicle body. The upper connection usually contains a bearing that permits the coil spring to rotate as the wheels turn, for smoother steering.

The strut suspension has eliminated the need for several parts, including the upper control arm and the upper ball joint. This has several advantages including lighter suspension weight, fewer moving parts and more room in the engine compartment.

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