Q: What Is a Strut?

asked by on

What is a strut?

A strut, also known as a MacPherson strut, named after Earle MacPherson, the engineer who developed this type of suspension, looks like a big tube-style shock absorber and uses the upper part of the strut as a steering pivot, instead of an upper control arm. The bottom of the strut meets the outer end of the lower control arm, and it’s at this point that the part that supports the wheel, known as the steering knuckle or wheel carrier is mounted. Typically, the coil suspension spring is combined concentrically with the tube of the strut, or a strut can also be used with torsion bars as the suspension medium. Eliminating the upper control arm is more space efficient and allows for fewer parts in suspension systems, lowering manufacturing costs. Strut type suspension systems are in wide use by many manufacturers. If you notice the symptoms of a bad or failing strut, book a strut assembly replacement with an ASE-certified mechanic from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What Is a Strut?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Front strut is creaking.

It can be a challenge when it comes to pin pointing noises in the suspension system to identify what part is making which noise. It does not help that there are several components that can produce the same or very...

Q: Whenever i touch my car -Just a little touch the whole car shake as if it will turn upside down.

Hello. It sounds like you have weak springs or struts. It is heard of for those to weaken and produce the concerns you speaketh of. Springs, shocks, or struts are suggested to be replaced every 50,000 miles. I suggest having...

Q: How much to replace the two rear suspension coils?

Billing question was sent to CS for the cost of repairing / replacing the rear suspension coils on a 2006 Mercedes-Benz E350.

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...