Control Arms - Lower Control Arm - Upper Control Arm



Control arms are found in the suspension system at the front axle; you’ll find one or two of them connected to each of the front wheels. Front-wheel drive vehicles typically only have a lower control arm, while most SUVs and trucks have both upper & lower control arms.

These control arms have connection points on each end to link the wheel hub and steering knuckles to the vehicle frame. You’ll typically find them equipped with bushings linked to the vehicle frame and a ball joint that’s connected to allow a controlled wheel movement in all directions. This control arm ball joint gives the steering knuckle the ability to pivot and give a smooth turn while the vehicle moves.

Most of them vary in design depending on suspension geometry, but they are typically A-shaped, L-shaped, or wishbone-shaped. They can be made from cast iron, stamped steel, or cast aluminium. Control arms made from steel and iron are fundamentally strong, sturdy, and resistant to damage. Cast aluminium control arms, on the other hand, are made for lighter weight applications.

What Does a Control Arm Do?

The control arms are one of the most essential parts of a suspension system. They are the direct connection points of the front wheel assemblies and the vehicle’s frame. Control arms allow you to steer your vehicle while guiding the wheels up and down the road. At the same time, they reduce unnecessary movements such as unwanted forward and rearward movement.

In technical terms, they connect the steering knuckle to the frame and allow the wheels and chassis to move in unison. This is important for stabilising the vehicle while in motion.

How Long Do Control Arms Last?

Like all components, your control arm can wear out over time. They will typically wear out around 145,000 to 160,000 kilometres. Though they can wear out faster or become damaged if you get into an accident though. If not, various parts of your control arms assembly, such as bushings and ball joints, will likely wear out first.

When Do the Control Arms Need to be Replaced?

You’ll know your control arms need to be replaced when you spot the following signs:

  • Your steering wheel or the car’s whole frame vibrates while you are driving.
  • You hear loud banging noises when you go over speed bumps and potholes.
  • You get uneven and irregular tyre wear.
  • The tyres move or shake while driving.

When you get these signs, it’s critical to have your vehicle assessed by a mechanic for a control arm replacement.

Is Driving With a Bad Control Arm Dangerous?

Driving with a damaged control arm can cause suspension parts to misalign. This will result in steering and handling issues with your vehicle, making you more prone to accidents. Have your control arms, suspension, bushings, and ball joints regularly checked to prevent accidents from happening.

Does Your Vehicle Need a Control Arm Replacement?

Whether you need an upper or lower, front or rear control arm, we have them here at Machter Auto! We offer a wide variety of control arms for various car makes and models. Find replacement parts for Subaru Forester lower control arm, Subaru Impreza lower control arm, Ford Territory lower control arm, Ford Falcon lower control arm, Ford range rover lower control arm, Toyota Hilux adjustable upper control arms, Toyota Camry lower control arm, BMW lower control arm, BMW upper control arm and more! Get your control arm replacement today!

Machter Auto is one of Australia’s leading aftermarket auto parts suppliers since 2002. Find what you need from our expansive range of high-quality replacement parts and accessories. Whether it’s an engine, electrical, or suspension part, you can get it at a more affordable price here! Shop now!