Fitment:

2007 - 2014 For FORD    EDGE        
2007 - 2014 For LINCOLN    MKX

Package Includes:

1x Part # Front Lower Left (Driver) Control Arm and Ball Joint Assembly - K620487
1x Part # Front Lower Right (Passenger) Control Arm and Ball Joint Assembly - K620486
2x Part # Front Stabilizer Bar Link - K750159

Control Arm:

Features:

A control arm is a hinged metal link that connects a car's frame to the wheel hub or steering knuckle. It guides the wheel up and down, manages forces from the road, and keeps your tires properly aligned for safe steering and stability.

What happens when you need a control arm?

When control arms fail, your car loses stable wheel alignment and smooth suspension control. You will experience loud clunking noises over bumps, a steering wheel that shakes or vibrates, and a vehicle that pulls or wanders to one side. If ignored completely, a catastrophic failure can detach the wheel and cause a severe loss of control. 

Installation

• Match parts: Compare the old arm to the new control arm to make sure they are an exact match.
• Install the new arm: Put the new control arm into place. Hand-tighten the frame pivot bolts first. Attach the ball joint to the steering knuckle and tighten its nut. Reconnect the sway bar link.
• Torque at ride height: Lower the car until the weight rests on the tires (or use a jack under the suspension) before you fully torque the inner rubber bushing bolts to factory specs.
• Final steps: Put the wheel back on, lower the car completely, and torque the lug nuts. Get a professional wheel alignment right away.

Ball Joint:

Features:

A ball joint is a spherical bearing that connects a vehicle's control arm to its steering knuckle. It acts as a pivot point that lets the front suspension move up and down while allowing the wheels to turn left and right.

How a Ball Joint Works

• Ball Stud: A steel stud with a ball-shaped head that pivots and rotates inside a socket.
• Socket & Housing: The metal casing enclosing the ball, usually lined with a bearing surface and packed with grease to lower friction.
• Rubber Boot: A flexible cover that keeps out dirt and water while holding grease inside.

What are the symptoms of a bad ball joint?

Common signs of a bad ball joint include a loud clunking or knocking noise when hitting bumps, uneven tire wear on the inner or outer edges, a loose or wandering steering feel, and steering wheel vibrations. A failed ball joint can cause a sudden loss of vehicle control

Replacement Steps

1. Lift the vehicle safely on jack stands and remove the wheel.
2. Remove interfering parts like the brake caliper or rotor if needed.
3. Separate the ball joint stud from the steering knuckle using a ball joint separator or pickle fork.
4. Unbolt or press out the old ball joint from the control arm.
5. Install the new component, torque all hardware to manufacturer specifications, and get a wheel alignment.

Tie Rod End:

Features:

A tie rod end is a crucial car part that connects your steering gear to the wheel's steering knuckle to help you steer safely.

What are the symptoms of bad tie rod ends?

Symptoms of bad tie rod ends include loose or shaky steering, a steering wheel with excessive play, uneven front tire wear, clunking or squeaking noises when turning, and the car wandering or pulling to one side while driving.

Installation Steps

Removal: Safely raise the vehicle, remove the wheel, and disconnect the old tie rod end from the knuckle, counting the turns as you unscrew it.

Installation: Thread the new end on using the same number of turns, then secure it to the steering knuckle, ensuring the taper fits correctly.

Finalizing: Torque the nut to specifications and install a new cotter pin if required. Finally, tighten the jam nut and get a professional wheel alignment.

Sway Bar Links:

Features:

A sway bar link connects your car's anti-roll bar to its suspension, keeping the vehicle stable and flat when you turn.

What happens when a sway bar link goes bad?

When a sway bar link goes bad, your car loses stability during turns, makes loud noises over bumps, and leans more than normal. The sway bar (or stabilizer bar) connects your wheels to the car frame to keep the body flat. When the small link connecting them wears out, it causes clear warning signs. 

Replacement Steps

• Match the new link to the old one to verify size.
• Put the new link in place.
• Thread the nuts on by hand.
• Tighten the nuts to the proper factory torque settings using a torque wrench.
• Put the wheel back on, lower the car, and tighten the lug nuts.

Idler Arm:

Features:

An idler arm is a pivoting support component in traditional parallelogram steering systems (recirculating ball steering) that holds one end of the center link at the proper height and acts as a pivot point when you turn the steering wheel.

What happens when an idler arm goes bad?
When an idler arm goes bad, the steering and front suspension lose stability. This causes loose steering play, vehicle wandering, uneven tire wear, and unusual clunking noises when driving over bumps. In severe cases, it can lead to a complete loss of steering control. 

Common Symptoms
Steering Play: The steering wheel feels loose. You can turn it back and forth a bit before the tires actually respond.
Wandering or Roving: The car drifts or pulls to one side. You must constantly correct the steering wheel to drive straight on a flat highway.
Clunking Noises: You hear thumps, knocks, or clunks from the front end when going over bumps or turning the wheel.
Uneven Tire Wear: The edges of the front tires wear out fast or look feathered because the wheel alignment shifts while driving. 

Replacement Steps

1. Prep and Lift the VehiclePark on flat ground and apply the parking brake.Raise the front of the vehicle with a floor jack and secure it safely on sturdy jack stands.Remove the passenger-side front wheel for better access to the steering linkage.
2. Disconnect and Remove Old ArmDetach the arm from the steering linkage and frame rail, following the guidance at GSW Auto Parts.
3. Install New ArmAssemble the new component, torque the bolts, and secure it, as detailed on GSW Auto Parts.
4. FinalizeGrease the new joint and ensure the vehicle receives a wheel alignment.

Note

• If you have any question about the product, please contact us before buying, we will give you a best reply in time.
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