Stabilizer links connect the vehicle’s left and right wheels through short links, reducing body roll whilst cornering. These parts are built from other, very important elements. Let us tell you which elements.

  1. Nut
  2. Top spring
  3. Dustcover
  4. Bottom spring
  5. Housing
  6. Insert
  7. Ball-pin
  8. Backplate

Self-locking nuts

Thanks to our self-locking nuts, parts don’t loosen under vibration or when used normally. Their deforming elastic or metal materials also stays in position in case of torque and shock. Sidem nuts are made of class 10 steel and are coated with white zinc. The latter treatment prevents corrosion.

The dustcover

The dustcover of the ball joint in the stabilizer link makes sure that water doesn’t infiltrate in the ball joint articulation. It is made of natural rubber that maintains it elasticity when exposed to extreme temperatures. That’s important in function of the ball-pin movement. Good to know is that our dustcovers are non-rotating and don’t twist. Sidem tests its dustcovers for endurance when they are already installed in the ball joint.

Top and bottom springs

Our top and bottom springs assure that the rubber dustcover fits properly, and water doesn’t infiltrate. The springs are made from spring steel. Furthermore, they are coated in a different color to differentiate them in terms of dimensions and protect them against corrosion.


The housing of the stabilizer link is a casing for the insert and ball-pin. It consists of 2 rings that are welded together with an axle. This welding happens on automatic spot-welding machines. The material of the housing is S37B steel.


Sidem inserts are made of polyoxymethylene, which doesn’t deform at high impact. Inserts constrain the ball-pin translation movement. Between the insert and ball area is a specific quantity of special grease that is water-repellent and reduces friction.


Ball-pins are constantly moving. That’s why they need to move smoothly. We’ve done two things to ensure this. Firstly, we have made the thread by rolling. Secondly, the spherical area is rolled to obtain necessary roughness. Our ball-pins are made of chromium steel, a material that prevents the part from breaking at extreme impact. Furthermore, chromium steel is more rust-resistant than carbon steel.


Backplates are steel parts that hold the plastic insert in the housing. They are pressed against the insert by rolling of the housing.

Have a look at our digital catalogue to discover our complete range of stabilizer links.