How front struts work
A front strut – also known as a MacPherson strut – forms an integral part of a vehicle’s suspension system. It’s very similar to a shock absorber, but the difference between a strut and a shock is that where the shock simply acts as a buffer between the vehicle’s wheels and body, protecting occupants from imperfections in the road surface, a strut does all of that and also forms part of the steering setup.
When you change front struts you also need to have the alignment angles reset because they can govern the caster and camber angles. Because of this extra feature you normally have to pay more for struts than for shock absorbers.
This task requires some experience. You will need a comprehensive tool kit and the job will take around an hour per wheel, depending on your model.