Individual Upper Control Arms with Fitting Position Front Axle, Rear Axle for FORD FOCUS LS, LT, LV

An upper control arm is the top link in an independent suspension. It joins the chassis to the top of the steering knuckle through a pair of bushes at one end and a ball joint at the other. Together with the lower control arm, it holds the wheel at the correct angle while the suspension moves through its travel. Individual upper control arms are sold as a single left or right arm rather than as a pair. That makes them a practical option when only one side has been damaged or worn, which is common on a 4WD that spends time on corrugations, rocky tracks and washouts. Use the vehicle search to find individual upper control arms to suit your LS, LT, LV FOCUS.

What Does a LS, LT, LV FOCUS Upper Control Arm Do?

The upper control arm locates the top of the wheel assembly. As the suspension compresses and extends, the arm pivots on its chassis bushes and the ball joint lets the knuckle swing and steer. The geometry of the arm helps set camber, which is how far the top of the tyre leans in or out, and it also plays a part in caster, which affects steering feel and self-centring.

On most independent front ends, the upper arm carries less load than the lower arm and is often lighter in construction. It still takes a fair share of the impact when a wheel drops into a hole or hits a rock.

Why Buy a Single Left or Right LS, LT, LV FOCUS Arm?

LS, LT, LV FOCUS One-Sided Damage or Wear

The most common reason to buy one arm is that only one side needs attention. A hard hit on a rock, a kerb strike or a deep pothole at speed can bend an arm on one side and leave the other untouched. A ball joint or bush can also fail early on one side, particularly if that corner has taken more water, mud or impact than the other. Replacing just the affected arm can restore the suspension without paying for parts you do not yet need.

When to Do Both Sides of Your LS, LT, LV FOCUS

Many owners and workshops prefer to replace both upper arms at the same time, even when only one has failed:

• Even wear. A new arm with fresh bushes and a new ball joint can behave slightly differently to a worn arm on the other side.
• Alignment consistency. Settings are easier to get right when both sides start from the same condition.
• Kilometres. On a high-kilometre vehicle, if one side has worn out, the other is often not far behind.

Replacing a single arm is not wrong, and it is not always necessary to do both. It comes down to the condition of the opposite side, which a technician can check while the vehicle is up.

What Types of Individual Upper Control Arms Are There for Your LS, LT, LV FOCUS?

LS, LT, LV FOCUS Factory-Style Replacement Arms

These are designed to match the original arm's dimensions and geometry. They suit a vehicle running at or near standard ride height that needs a worn or damaged arm replaced. A factory-style arm generally aims to return the suspension to the way it was designed to work, rather than change it.

Upgraded Arms for a Lifted LS, LT, LV FOCUS

Aftermarket upper arms for lifted vehicles are often built with different geometry, a different ball joint arrangement or extra clearance for larger coil-overs. Many of these are sold as matched pairs rather than single arms, because both sides need to change together to keep the geometry even. If you are lifting a 4WD rather than repairing one, a pair of upgraded arms may suit the job better than a single replacement.

How Do You Know a LS, LT, LV FOCUS Upper Control Arm Needs Replacing?

Wear usually shows up in the bushes or the ball joint before the arm itself fails. Common signs include:

• Clunks or knocks over bumps, corrugations or when turning at low speed.
• Vague or wandering steering that needs constant small corrections on the highway.
• Uneven tyre wear, especially on the inner or outer shoulder of one front tyre.
• Cracked, split or perished bushes visible on inspection.
• A torn ball joint boot, which lets grease out and dirt and water in.
• Free play at the ball joint when the wheel is rocked with the vehicle safely supported.
• Visible bending or kinking of the arm after an impact.
• An alignment that will not hold, or camber outside specification on one side.

Tie rod ends, lower arm bushes and wheel bearings can cause similar symptoms, so an inspection is worth doing first.

LS, LT, LV FOCUS Lifted, Loaded and Towing Considerations

LS, LT, LV FOCUS Ball Joint Angle After a Lift

Lifting an independent front end changes the angle of the upper arm. The ball joint can sit closer to the end of its range, and the arm can contact the coil or strut at full droop. A factory-style replacement arm will generally keep the same limitations as the original, so if your 4WD is lifted beyond a modest amount, check whether a standard replacement still suits the setup.

LS, LT, LV FOCUS Camber and Caster Changes

A lift can pull the top of the wheel inwards and reduce caster. A replacement arm that matches the original geometry will not correct these changes on its own. If your alignment specialist cannot bring the settings back into range, other alignment parts or upgraded arms may need to be considered.

Extra Load and Harsh Conditions

Bull bars, winches, dual batteries and touring gear add weight over the front axle, and towing can shift load around the vehicle. More weight generally means more stress on bushes and ball joints and can shorten their service life. Mud, sand and water crossings add to that wear. Loaded 4WDs often benefit from more frequent suspension checks, especially before and after long trips.

What Comes With an Individual LS, LT, LV FOCUS Upper Control Arm?

What is supplied can vary between vehicles and suppliers. Many single arms come as a complete assembly with bushes pressed in and the ball joint fitted. Others are supplied without the ball joint, which then needs to be sourced separately or transferred from the old arm if it is still in good condition.

Mounting hardware such as bolts, nuts and alignment cams may or may not be included. Always check the product details before the job starts.

Should You Repair or Replace a LS, LT, LV FOCUS Upper Control Arm?

When Repair Can Work

If the arm itself is straight and undamaged, worn parts can sometimes be replaced individually. Bushes can be pressed out and replaced with rubber or polyurethane bushes, and ball joints on some arms are bolted or pressed in and can be replaced on their own. This can make sense when only one part has worn and the rest of the arm is sound.

When Replacement Makes More Sense

Replacing the whole arm is usually the better option when:

• The arm is bent, cracked or heavily corroded.
• The ball joint is riveted or integrated into the arm.
• Both the bushes and the ball joint are worn, so the labour of replacing each part adds up.
• The vehicle needs to be back on the road quickly.

A bent arm should not be straightened and refitted, as heating or bending the steel can weaken it.

How Do You Make Sure You Get the Right Arm for Your LS, LT, LV FOCUS?

Left and Right in Australia

Left and right are generally described from the driver's seat, looking forward. On a right-hand drive vehicle, the left arm is on the passenger side and the right arm is on the driver's side. Ordering the wrong side is a common mistake with single arms.

Front or Rear Axle

Most vehicles only use upper control arms at the front, but some 4WDs with independent rear suspension also use them at the rear. Arms for each position are not interchangeable, so confirm the fitting position alongside the side. Note any suspension changes as well, since they can affect which arm is suitable.

How Are Individual LS, LT, LV FOCUS Upper Control Arms Fitted?

Fitting involves separating the ball joint from the knuckle and supporting components under load, so it is a job for a qualified technician. A typical process looks like this:

1. Support the vehicle on rated stands, never on a jack alone, and support the knuckle so it does not hang on the brake hose or CV joint.
2. Remove the old arm, taking care with any coil-over or strut under load.
3. Fit the new arm and connect the ball joint to the knuckle.
4. Tighten the bush bolts at ride height. Tightening them with the suspension hanging can preload the bushes and shorten their life.
5. Torque all fasteners to specification, including the ball joint nut and any split pin.
6. Have a wheel alignment done, as camber, caster and toe can all change.
7. Road test the vehicle and recheck fasteners after the first few hundred kilometres.

Find the Right LS, LT, LV FOCUS Individual Upper Control Arm with Formula 4x4

1. Use the vehicle search to show arms for your LS, LT, LV FOCUS.
2. Confirm the side and fitting position.
3. Check the product details for what is included, such as the ball joint and hardware.
4. Consider whether the opposite side needs replacing too.
5. Allow for any lift or added load in your choice.
6. Book a wheel alignment for after fitting.

If you are unsure what your LS, LT, LV FOCUS needs, contact the Formula 4x4 team.