logo

BMW 840Ci Control Arm Assembly Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(62)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

See availability

Customer Ratings

(62)

Control Arm Assembly Replacement Service

How much does a Control Arm Assembly Replacement cost?

On average, the cost for a BMW 840Ci Control Arm Assembly Replacement is $270 with $130 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1994 BMW 840CiV8-4.0LService typeControl Arm Assembly - Front Upper Left ReplacementEstimate$542.46Shop/Dealer Price$642.38 - $926.55
1994 BMW 840CiV8-4.0LService typeControl Arm Assembly - Rear Upper Right ReplacementEstimate$1346.13Shop/Dealer Price$1649.37 - $2551.89
1996 BMW 840CiV8-4.4LService typeControl Arm Assembly - Front Lower Left ReplacementEstimate$448.95Shop/Dealer Price$517.97 - $715.51
1997 BMW 840CiV8-4.4LService typeControl Arm Assembly - Rear Lower Right ReplacementEstimate$1389.93Shop/Dealer Price$1694.19 - $2597.46
1996 BMW 840CiV8-4.4LService typeControl Arm Assembly - Rear Upper Left ReplacementEstimate$1389.93Shop/Dealer Price$1697.54 - $2603.33
1997 BMW 840CiV8-4.4LService typeControl Arm Assembly - Rear Lower Left ReplacementEstimate$1389.93Shop/Dealer Price$1694.51 - $2598.02
1995 BMW 840CiV8-4.0LService typeControl Arm Assembly - Rear Lower Left ReplacementEstimate$1346.13Shop/Dealer Price$1649.44 - $2552.01
1994 BMW 840CiV8-4.0LService typeControl Arm Assembly - Rear Upper Left ReplacementEstimate$1346.13Shop/Dealer Price$1649.42 - $2551.96
Show example BMW 840Ci Control Arm Assembly Replacement prices

What is a control arm and how does it work?

A control arm is a suspension component, usually made of heavy gauge steel or aluminum, that links the steering knuckle in the front — or axle carrier in the rear — to the frame of the vehicle. Many vehicles have upper and lower control arms. The inboard link(s) of the arm securely bolt to the frame of the vehicle through rubber bushings, while the outboard link of the control arm connects to the steering knuckle through a ball joint; all of which allow the control of the up and down movement of the steering knuckle or axle carrier. This minimizes the transmission of shock and vibration to the vehicle’s body.

When to consider replacing a control arm:

The structural portion of the control arm can last the life of the vehicle — except for cases of corrosion or crash damage. However, the rubber bushings and the ball joint in a control arm have a limited life. A mechanic should investigate if you notice:

  • Wheel alignment difficulties. Should the bushings, or the ball joint, in a control arm be worn, it will be impossible to properly align the vehicle. The worn components, or the entire arm, must be replaced.
  • Vehicle won’t track straight or pulls to one side. A car will not track straight and may require constant steering correction if there is a worn, bent, or loose control arm.
  • Clunking or squeaking noise. A loose control arm, or a control arm with dried out, rotted, or loose bushings, may move enough to cause detectable noise from the suspension as you go over bumps in the road.
  • Vehicle pulls to one side only when braking. Worn bushings or ball joints can allow control arm to shift when braking, causing the vehicle to pull to one side. Although, this could also be caused by brake calipers.

How do mechanics replace a control arm?

  • The vehicle is raised and supported on steel jack stands, and the wheel and tire assembly is removed.
  • Stabilizer bar links are detached from the control arm, if applicable. ABS wiring to the wheel speed sensor, if routed along the arm, is disconnected.
  • Control arm mounting bolts are detached from the frame and from the axle carrier if the control arm is in the rear.
  • For front control arms connected to the steering knuckle via a ball joint, the nut is removed from the ball joint stud and the stud is pushed through the steering knuckle to free the arm.
  • The arm is lowered from the vehicle and examined by the mechanic to confirm that the noise, or other problem, actually originated from a defect in the arm.
  • The new arm is installed using new mounting bolts if required by the service manual. In many cases, the fasteners must be tightened with the vehicle weight on the suspension in order to ensure the bushings are in a neutral, or resting, position.
  • The vehicle is lowered and road tested to confirm the problem is resolved. Replacing a control arm will change the vehicle alignment settings and the mechanic will refer you to a professional alignment shop to have the vehicle alignment set to factory specifications.

Is it safe to drive with a control arm problem?

No. If the car wanders on the road, pulls to one side, or noise from the suspension is loud, you need to schedule repair right away. Should the problem be limited to low levels of noise, such as clunking or squeaking, continued use of the car is reasonable until you can schedule a repair. Should the control arms be damaged as a result of a collision, it would be unsafe to drive the car until it is repaired.

When replacing a control arm keep in mind:

  • The number of control arm types vary from vehicle to vehicle depending on the design of the vehicle suspension.
  • Control arms should be replaced in pairs — arms on both sides of a front or rear axle — if the reason for replacement is worn control arm bushings or a worn ball joint.
  • All other suspension components should be inspected when control arms are replaced because looseness, damage, or excessive wear in other parts of the suspension system will make it impossible to perform a wheel alignment after the control arms are replaced.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Number of BMW Control Arm Assembly Replacement services completed
682+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(62)
Rating Summary
58
3
0
0
1
58
3
0
0
1

Adam

18 years of experience
263 reviews
Request Adam
Adam
18 years of experience
Request Adam
by Thomas
BMW 840Ci V8-4.4L - Car is not starting - Boynton Beach, Florida
Adam was great. He was on-time and had to wait because of a stupid HOA rule. He got the car started again recommended a good charger, and was extremely through in his inspection that identified a couple problem with the oil caps that need to be replaced. I highly recommend Adam and plan n using him again when i receive the quote for the recommended services.

Jeremy

21 years of experience
802 reviews
Request Jeremy
Jeremy
21 years of experience
Request Jeremy
by Thomas
BMW 840Ci V8-4.4L - Battery - Boynton Beach, Florida
On time, nice guy, always does a good job. I will be in touch with him and YourMechanic.com again in the near future. Thanks again!

Torrieanto

13 years of experience
632 reviews
Request Torrieanto
Torrieanto
13 years of experience
Request Torrieanto
by Shannon
BMW 535i L6-3.0L Turbo - Control Arm Assembly Replacement (Front Upper Left, Front Upper Right, Front Lower Left, Front Lower Right) - Lakeland, Florida
Torrieanto was prompt and a pleasure to be around. He explained everything to me and made sure I was comfortable with everything he was doing. And above all that, he repaired my vehicle properly to the best of my knowledge. I’d book him for another repair in the future.

Curtis

30 years of experience
163 reviews
Request Curtis
Curtis
30 years of experience
Request Curtis
by Demarco
BMW 745Li V8-4.4L - Control Arm Assembly Replacement (Front Upper Left) - McCormick, South Carolina
Job well done!

Excellent Rating

(62)
Rating Summary
58
3
0
0
1
58
3
0
0
1
Number of BMW Control Arm Assembly Replacement services completed
682+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

Symptoms of a Bad or Failing Throttle Controller
Common signs include intermittent throttle control, throttle hesitation or problems hesitating, and drastic changes in fuel economy.
Read more
Can Cracked Hoses Be Repaired or Do They Need to Be Replaced?
Most Most hoses are made of rubber. Some hoses are reinforced, but rubber remains the primary construction material. Rubber offers the right mix of capabilities – it can easily expand and contract with temperature fluctuations, it’s relatively light, and it’s...
Read more
The Guide to Right-of-Way Laws in West Virginia
The The key to safe driving is based on common courtesy. But since not everyone is courteous, right-of-way rules are also codified in West Virginia. These laws are in place to keep you safe, and you need to know them....
Read more

Won't start w/ no engine turn over. (Intermittent)

The system uses a starter relay (https://www.yourmechanic.com/services/starter-relay-replacement) that is in the engine compartment fuse box. This relay is activated by the ignition switch through the clutch switch and engine control module. You may have a bad relay or problems with...
Read more

What causes play in the steering?

There are mechanical components inside the steering system that do tend to wear over time and you may notice a little extra play over a period of time. Usually this feeling comes from worn inner or outer tie rods. The...
Read more

How long does it take to remove and replace a throttle?

Hi there If the throttle sensor is not working, it's most likely caused by an electrical issue; as opposed to a mechanical problem with the throttle body or other components. The best thing to do is have a professional mobile...
Read more
  1. Home
  2. Estimates
  3. BMW
  4. 840Ci
  5. Control Arm Assembly Replacement

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com

Read FAQ
GET A QUOTE