Control Arm

A control arm connects the steering knuckle and wheel hub to the vehicle's frame or body. It allows the driver to steer the car and guides the wheels up and down with the road surface

What is a Control Arm and What Does It Do?

The suspension system of a vehicle serves to connect the chassis to the steering components, which are ultimately attached to the wheels. A crucial component of this system is the control arm, commonly known as the ”lower control arm.” This component is typically constructed from either stamped steel or cast aluminum and features a ball joint and bushing at the wheel end, being secured to the frame or chassis inboard. Control arms play a vital role in maintaining the connection between the steering knuckle and the vehicle.

Why Does My Car Need a Control Arm?

Control arms are critical components designed for durability and reliability, typically resistant to failure under normal driving conditions. However, factors such as unexpected impacts or external forces can lead to damage. Over time, corrosion might also take its toll, compromising their integrity. Additionally, if you’re experiencing issues, it’s worth considering that your mechanic could recommend replacing the bushing and possibly the ball joint. Opting for a control arm kit may be a smart investment, as it not only addresses immediate concerns but can also save you money compared to purchasing each part separately. Choose a proactive solution that ensures your vehicle continues to perform at its best, keeping you safe on the road and preventing future expenses.

How Do I Know If I Need to Replace a Control Arm?

These symptoms indicate a problem with your vehicle’s suspension.

Do I Need To Align My Car After Replacing a Control Arm?

An alignment is a routine part of the job when suspension components that affect steering are involved. An alignment is usually an approximately $90 charge and has benefits beyond just putting the control arm job to bed. Read more about wheel alignment here.

What About Other Components?

Control arms are designed to last the life of a vehicle. If they have failed for some reason, it would be wise to check all of the suspension components and wheel bearings to see if other work is warranted. Once the wheels are coming off anyway, it makes sense to do a brake health check during this job.

How Much Does A Control Arm Replacement Cost?

Different vehicles use different control arm designs. Some control arms have parts assembled onto them and are a sort of kit. Others are just a static part. The control arm itself will likely only account for 25% to 50% of this job. Labor will be the largest cost involved. Ball joints are usually part of this job as well. Affordable mainstream vehicle models will have relatively low cost control arm replacement costs, and high-end luxury models will cost more.

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