Description: Struts are used on the front end of almost all front-wheel-drive vehicles. Technically known as
MacPherson struts, they're much more than a shock absorber with a different name. A strut integrates
numerous suspension parts into one compact assembly, including the coil spring, spring seats, shock
absorber, strut bearing, and steering knuckle. The shock absorber portion of the strut is the most commonly
serviced portion of the strut assembly.


Purpose: Because it integrates different components into one assembly, a strut serves multiple purposes.
With its spring, it can support the weight of the vehicle, while moving to adapt to road irregularities. The
internal shock absorber dampens movement of the spring as it compresses and rebounds during vehicle
travel. The strut housing serves as a structural part of the suspension system and connects the upper strut
bearing to the lower ball joint so that the entire assembly can pivot when the steering wheel is turned.

Maintenance Tips/Suggestions: Your vehicle's struts should be checked once a year, usually in conjunction
with a wheel alignment. Under normal conditions, the shock absorber portion "the strut cartridge" wears out
gradually and you may not notice incremental losses in ride quality, handling and control. Some signs that
your vehicle may have worn struts include bottoming out, excessive bouncing, rocking back and forth, drifting
or nose-diving while braking, swaying, or cupping wear on the tires. If your car needs MacPherson strut
service, it may also be a good time to replace the coil springs. Since they usually need to be removed when
changing struts, you can save labor costs by installing new springs at the same time. For a complete check
of your vehicle's suspension system, have it thoroughly inspected by a qualified service technician.   
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