Control Arm Replacement: Costs & What You Need To Know

The majority of drivers may not understand what the control arm is or how important it is to the suspension system. Yet, when something goes wrong, it doesn’t take long to learn the basics of the control arm and what makes it so essential. If you face a repair, you want to know the average control arm replacement cost before you schedule an appointment. This comprehensive guide covers the overall cost of replacing a control arm, explores the factors that affect this repair cost, and explains the function of this valuable part. For those considering a DIY approach, we provide basic steps and address frequently asked questions.

How Much Does It Cost To Replace A Control Arm?

On average, a professional control arm replacement will cost between $250 and $700. This price can be lower if you opt to perform the job yourself, only incurring the cost of the parts. However, several factors can influence the final repair bill. These include your vehicle's make and model, the quality of parts you choose, the labour costs involved, and any additional services like a wheel alignment.

Factors Affecting The Control Arm Replacement Cost

Let’s delve deeper into the elements that contribute to the overall cost of a control arm replacement service. Understanding these categories will help you better estimate your potential repair expenses.

1. Vehicle Make/Model

While one might assume larger vehicles incur higher repair costs, this isn't always the case with control arms. In fact, some estimates suggest that popular sedans can sometimes be more expensive to repair than larger trucks. The difference in cost is usually not significant, but it's worth noting. Some vehicles also feature more complex suspension systems, which can increase the difficulty and therefore the labour time required for a control arm replacement.

2. OEM vs. Aftermarket Parts

The price of the replacement part itself is a significant consideration. If you desire an exact match to the original factory-installed control arm, you’ll want to opt for an OEM (Original Equipment Manufacturer) part. These are typically available from a local dealership and tend to be more expensive. Alternatively, if having the exact original part isn't a priority, a wide range of aftermarket parts are available from local auto parts stores or online. These aftermarket options often perform comparably to OEM components, but it's crucial to select reputable manufacturers to ensure quality and longevity.

OEM vs. Aftermarket Parts Comparison:

3. Additional Parts Required

In most scenarios, only the control arm itself will need replacement. However, there are instances where other suspension components may also require attention. For example, the sway bar links might need to be replaced concurrently. If the ball joints are not integrated into the control arm assembly, they may also need to be replaced. Furthermore, if you plan to undertake the replacement yourself, you’ll need to factor in the cost of any specialised tools or equipment required for the job.

4. Labour Costs

If you are not performing the replacement yourself, labour costs will be a significant portion of the total expense. These costs are influenced by several factors. Firstly, your geographical location plays a role; labour rates in busy urban areas are typically higher than in rural locations. Secondly, the type of vehicle you drive can impact labour costs, as some vehicles have more accessible suspension systems, requiring less time to replace the control arm. Finally, the type of repair shop you choose will affect the labour rate. Dealerships generally charge more than independent repair shops, but often provide higher levels of expertise and warranty on their work.

5. Wheel Alignment

Following a control arm replacement, it is highly recommended to have a wheel alignment performed. Because the suspension geometry has been altered, ensuring the wheels are properly aligned is crucial for safe and efficient driving. A wheel alignment typically costs between $75 and $150. Most local tyre shops can perform this service, often without the need for an appointment.

What Does A Control Arm Do?

The control arm is a fundamental component of your vehicle's suspension system. It acts as a crucial link, connecting the steering knuckle (which holds the wheel hub and bearing assembly) to the vehicle's chassis or frame, usually via a ball joint at the knuckle end. As your vehicle encounters uneven road surfaces, the control arm pivots, allowing the wheel to move up and down. This controlled movement is essential for maintaining stability and a smooth ride, even on imperfect roads. The control arm's integrated bushings facilitate this necessary pivoting action.

How To Replace A Control Arm (DIY Guide)

If you're considering replacing a control arm in your home garage, we strongly advise consulting your vehicle's specific service manual for detailed instructions. However, here are some general steps to guide you through the process:

Tools and Equipment You May Need:

• Floor jack
• Wheel chocks
• Jack stands
• Ball joint separator tool
• Hammer
• Breaker bar (optional)
• Ratchet
• Wrenches
• Sockets

Step-by-Step Replacement Process:

1. Secure the Vehicle: Park your vehicle on a level surface. Place wheel chocks behind the rear wheels for added safety, and consider placing them in front of the rear wheels as well.
2. Lift the Vehicle: Using your floor jack at the appropriate jacking point, carefully raise the front of your vehicle. Once elevated, position jack stands securely under the recommended support points and slowly lower the vehicle onto the stands. Remove the floor jack.
3. Remove the Wheel: To access the control arm, you'll need to remove the wheel. Use your ratchet and socket to loosen the lug nuts. Carefully pull the wheel off and set it aside in a safe place. Keep the lug nuts together.
4. Separate Ball Joints: Disconnect the ball joint from the steering knuckle. Remove the nut and bolt securing the stud using a socket and wrench. Employ your ball joint separator tool, placing it between the hub and the ball joint. Gently tap the separator with a hammer to dislodge the ball joint. This can sometimes require significant force, especially on older vehicles with high mileage.
5. Separate Control Arm: The control arm is attached to the vehicle's subframe or chassis at its pivot points. You may need a socket and wrench on one side and a wrench on the other to remove the bolts, depending on the vehicle model and access. Once the securing nuts and bolts are removed, you should be able to detach the control arm, possibly requiring some manual effort.
6. Install New Control Arm: With the old control arm removed, you can now install the new one. This process is essentially the reverse of the removal. Begin by securing the pivot points to the subframe or chassis. Then, attach the ball joint end to the steering knuckle. Ensure the components are properly seated before fully tightening the bolts.
7. Reinstall Wheel: Once the new control arm is correctly installed, refit the wheel. Carefully lower the vehicle back to the ground. After your vehicle has had a professional wheel alignment, take it for a test drive to ensure everything feels normal. If you notice any unusual behaviour, it’s advisable to have a mechanic inspect your work.

Is It Worth Replacing Control Arms?

Replacing control arms is essential if a defect is identified. Beyond necessary repairs, you might consider upgrading to higher-quality control arms after performing a suspension lift, as this can enhance durability and improve handling performance. Investing in premium control arms can contribute to the best possible driving experience.

Can You Drive With A Broken Control Arm?

A broken control arm severely compromises your suspension alignment. While it might be technically possible to drive short distances, it is strongly discouraged. Driving with a broken control arm can lead to further damage, affect your vehicle's handling, and compromise your safety. It's imperative to replace a broken control arm as soon as possible.

Can You Just Replace One Control Arm?

While it is possible to replace only one control arm, it is generally advisable to replace them in pairs. Control arms on the same axle typically experience similar wear and tear. Replacing only one can lead to an imbalanced suspension system, potentially causing uneven tyre wear and affecting handling. For optimal performance and longevity, replacing them as a set is the recommended approach.

How Long Does It Take To Replace A Control Arm?

The time required to replace an average control arm can range from a few hours. Keep in mind that most vehicles have two to four control arms, so if multiple are being replaced, the labour time will increase accordingly.

Do You Need An Alignment After Replacing Lower Control Arm?

Yes, it is highly recommended to have a wheel alignment performed after any suspension work, including control arm replacement. Altering or replacing suspension components can affect your vehicle's alignment settings. A proper alignment ensures your car drives straight, prevents premature tyre wear, and contributes to a smoother ride. The cost of an alignment is relatively minor compared to the potential benefits.

Can I Replace Control Arms Myself?

If you possess the necessary tools, have a good understanding of automotive mechanics, and feel confident tackling suspension repairs, you can indeed replace control arms yourself. However, if you feel unsure or overwhelmed by the complexity of the task, it is always best to entrust the job to a qualified professional mechanic.

In summary, the average cost for a control arm replacement typically falls between $250 and $700, depending on your vehicle, the chosen parts, and your location. By understanding the factors involved and considering a DIY approach with the right tools and knowledge, you can manage the cost of this essential repair. Investing in quality control arms and ensuring proper wheel alignment after replacement will contribute to your vehicle's safety, performance, and longevity.

If you want to read more articles similar to Control Arm Replacement: Costs & What You Need To Know, you can visit the Suspension category.