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Control Arm

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An important part of your vehicle's suspension system is the control arms as they manage the motion of the wheels in relation to your car's body. Too much movement and you and your passengers will soon find themselves feeling car sick, not to mention the wear and tear that worn out control arms do to the rest of your suspension system. At Auto Parts Warehouse we stock a huge selection of suspension parts and we have replacement control arms for your vehicle. With just a few clicks of the mouse, you can locate and order new control arms and have them shipped directly to you just in time for your repair project. Save time by doing the work yourself, save money by ordering your parts from us. As wholesalers of quality replacement and performance parts, we will not be undersold. We match or beat any price out there on comparable parts. Shop our store as we are the trusted industry leader in control arms and other fine automotive parts. We never close so you can order any hour of the day and on major holidays too. Place your order right now and we will ship your control arms out quickly.

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Control Arm Options: Getting the Right Component for Your Vehicle's Suspension

If you enjoy smooth rides and accurate steering control when you drive, a sturdy, hardworking control arm has much to do with this, along with other suspension parts. This arm keeps the wheels moving in sync with the auto body, making the vehicle handle pretty well. Due to the stress, however, it may be damaged or can become weak over time. The bushings attached to it may wear out, causing the suspension to make noise. A faulty suspension arm may result in loss of precision and poor handling. To bring back the good performance of your suspension, youíll have to get rid of the busted arm and put in a new one.

When in the market for a new control arm, you have to:

  • Know the type of suspension system used in your vehicle and the suspension arm design that will match the specs and requirements of your vehicle.
  • Search for a high-quality replacement. It has to be made from high-grade materials and has to be tested to meet industry standards.
  • Shop around and compare for the best prices. The price range varies according to the type of suspension system, arm design and features, brand, and seller.

Types of suspension system

There are basically two types of suspension system that use control arms.

Double wishbone suspension. A-shaped control arms are used in this suspension system.

Macpherson strut suspension. Only one control arm is used in this kind of suspensionóinstead of an upper arm, a vertical telescopic strut thatís linked to a coil spring is used.

Compared to the double wishbone suspension, the Macpherson strut has a more restricted vertical movement. It is less complex, and in terms of cost, itís less expensive. Double wishbone suspension, on the other hand, is quieter but also more complicated. It allows vertical movement. Small, compact vehicles are typically equipped with Macpherson struts, while double wishbone suspension is more commonly used in larger, more luxurious vehicles, although MBs, BMWs, and Porsches may sometimes be designed with Macpherson strut suspension.

Control arm design

Unitized. This arm has a built-in bolt joint. It comes in a single unit and not a separate piece. So when the arm or ball wears out, the whole unit is replaced.

Press in. This kind is used in wide-range applications, though this seems more fitting for heavier vehicles such as trucks, vans, and SUVs. This arm design uses a bigger ball joint.

Bolt In. This design is used in Macpherson strut suspension. It comes with a stamped strut-type arm body.

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Replacing Your Vehicle's Old Control Arm

The control arm may break or fail due to damaged bushings or ball joints, wear from suspension stress and from impact, or distortion because of improper towing. Whatever the reason is, a faulty arm will always lead to poor vehicle handling, loss of control, and lack of precision. A little bit of detective work will confirm if the old arm has to go. If itís time to replace it, here are the steps to help you with some DIY:

Note: This installation guide isnít applicable to all makes and models. You have to read the vehicle manual for further instructions and other important details about the control arm of your vehicle.

Difficulty level: Moderate

Tools youíll need:

  • Ball joint separator
  • Pry bar
  • Ball peen hammer
  • Torque wrench
  • Tire iron or breaker bar
  • Floor jack
  • Jack stands

Step 1: Park the vehicle on a level ground and use the parking brakes.

Step 2: Break loose the lug nuts on the front wheel using a tire iron or breaker bar. Donít remove them just yet.

Step 3: Jack up the vehicleís front section and place some jack stands on each side.

Step 4: Undo the lug nuts to remove the front wheels.

Step 5: For vehicles with short/long arm suspension and coil spring, a floor jack (sitting near the ball joint) must be used for supporting the lower control arm. Before you remove the lower arm, itís important for the coil spring to be contained. For vehicles with torsion bar suspension, you have to remove the tension on the bar.

Step 6: Detach the cotter pin from the ball joint nut, if it comes with one. You have to loosen this nut. However, you shouldnít remove it yet. Next thing you have to do is check the ball joint. If it comes with a pinch bolt, unscrew this bolt.

Step 7: Use a ball joint separator for detaching the ball joint from the knuckle. As you remove the nut, keep the knuckle out of the way.

Step 8: Disconnect components that are linked or attached to the lower arm.

Step 9: Pull out the assembly after removing the mounting bolts.

Step 10: Fit in the new arm and secure it with the bolts. Adjust the vehicle to proper riding height before the bolts are torqued.

Step 11: Put back the steering knuckle to the assembly.

Step 12: Put in the castle nut and torque it according to manufacturer specifications. Use a new cotter pin and reconnect components previously attached to the arm.

Step 13: Place back the front wheels and secure them with the lug nuts. After bringing the vehicle to the ground, you have to torque the lug nuts and control arm mounting bolts according to specs.