🔧 Altima - Front Lower Control Arm Replacement

This repair replaces the front lower control arms on your Altima. The lower control arm connects the front wheel hub area to the subframe and uses rubber bushings plus a ball joint to keep the wheel stable while steering and driving.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• ⚠️ Support your Altima securely with jack stands before working underneath it. Never rely on a jack alone.
• ⚠️ The front coil spring is part of the strut assembly and should not be removed for this job.
• ⚠️ Do not hammer directly on the aluminum steering knuckle. Use a ball joint separator tool.
• ⚠️ Replace suspension fasteners if they are badly rusted, stretched, or damaged.
• ⚠️ A wheel alignment is required after replacing control arms.
• ⚠️ Final tightening of control arm bushing bolts should be done with the suspension at normal ride height to prevent bushing damage.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• 21mm lug nut socket
• 1/2-inch drive breaker bar
• 1/2-inch drive ratchet
• Torque wrench (30-200 ft-lbs)
• 18mm socket
• 19mm socket
• 21mm socket
• 22mm socket
• 18mm combination wrench
• 19mm combination wrench
• 22mm combination wrench
• 10mm socket
• Flat blade screwdriver
• Needle-nose pliers
• Ball joint separator tool (specialty)
• Pry bar (18-inch)
• Rubber mallet
• Paint marker
• Penetrating oil
• Wire brush

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front lower control arm assembly - Left: 1, Right: 1
• Front lower ball joint pinch bolt and nut - Qty: 2
• Front lower control arm mounting bolts and nuts - Qty: 1 set
• Cotter pins or locking clips if equipped - Qty: 1 set

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📋 Before You Begin

• Park your Altima on level ground and set the parking brake.
• Place wheel chocks behind the rear wheels.
• Spray penetrating oil on the control arm bolts and ball joint fasteners. Let it soak for 10-15 minutes.
• Use a paint marker to mark the original position of the control arm bolts before removal. This helps keep the alignment close enough to drive to an alignment shop.
• A ball joint separator is a tool that presses the ball joint stud out of the steering knuckle without damaging nearby parts.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Front Wheel Lug Nuts

• Use a 21mm lug nut socket and 1/2-inch drive breaker bar to loosen the front lug nuts about 1/2 turn.
• Do this while the tires are still on the ground so the wheels do not spin.
• Loosen only. Do not remove yet.

Step 2: Raise and Support the Front of the Vehicle

• Use a floor jack at the front center jacking point to raise the front of your Altima.
• Place jack stands under the proper front side support points.
• Slowly lower the vehicle onto the jack stands.
• Gently shake the vehicle by hand to confirm it is stable before working underneath.

Step 3: Remove the Front Wheels

• Use a 21mm lug nut socket and 1/2-inch drive ratchet to remove the lug nuts.
• Remove both front wheels and place them flat under the side of the vehicle as an extra safety backup.

Step 4: Inspect the Control Arm Area

• Use a wire brush to clean the visible threads on the control arm bolts and ball joint fastener.
• Use penetrating oil again on the front bushing bolt, rear bushing bolt, and lower ball joint connection.
• Use a paint marker to mark the position of the control arm mounting bolts and washers.

Step 5: Remove Any Splash Shield Fasteners Blocking Access

• If the lower splash shield blocks access, use a 10mm socket and 1/2-inch drive ratchet to remove the small bolts.
• Use a flat blade screwdriver to gently release plastic clips if equipped.
• Move the shield aside without bending it sharply.

Step 6: Disconnect the Lower Ball Joint from the Steering Knuckle

• The steering knuckle is the metal part that holds the wheel bearing and connects to the strut, tie rod, and ball joint.
• Use an 18mm socket and 18mm combination wrench to remove the lower ball joint pinch bolt and nut if your Altima uses a pinch-style connection.
• If the fastener size differs due to replacement parts, use the matching 19mm socket and 19mm combination wrench.
• Use a ball joint separator tool to separate the lower ball joint from the steering knuckle.
• Use a rubber mallet only for light tapping on the tool, not on the knuckle itself.
• Do not damage the rubber boot.

Step 7: Remove the Front Control Arm Mounting Bolt

• Use a 19mm socket and 19mm combination wrench to loosen and remove the front control arm bushing bolt and nut.
• If the bolt is tight from rust, use the 1/2-inch drive breaker bar carefully and keep the socket square on the bolt head.

Step 8: Remove the Rear Control Arm Mounting Bolt

• Use a 22mm socket and 22mm combination wrench to loosen and remove the rear control arm bushing bolt and nut.
• Support the control arm with one hand as the last bolt comes out.
• The bushing is the rubber-filled mount that lets the arm move slightly without metal-to-metal noise.

Step 9: Remove the Old Control Arm

• Use a pry bar to gently work the old control arm out of the subframe pockets.
• Pull the ball joint end downward and away from the steering knuckle.
• Compare the old and new control arms side by side before installation.
• Make sure the new arm has the same shape, bushing locations, and ball joint orientation.

Step 10: Install the New Control Arm

• Position the new control arm into the subframe pockets by hand.
• Install the front and rear mounting bolts loosely using a 19mm socket, 22mm socket, and matching combination wrenches.
• Do not fully tighten the bushing bolts yet.
• Loose bolts allow correct bushing position.

Step 11: Reconnect the Lower Ball Joint

• Guide the lower ball joint stud into the steering knuckle by hand.
• Use a rubber mallet for light taps if needed.
• Install the ball joint pinch bolt and nut using an 18mm socket and 18mm combination wrench.
• Tighten the ball joint pinch bolt securely to manufacturer-style specification range: Torque to 65-75 Nm (48-55 ft-lbs).

Step 12: Preload the Suspension Before Final Tightening

• Place the floor jack under the outer end of the control arm, close to the ball joint.
• Raise the control arm slightly until the suspension looks near normal ride height.
• This prevents twisting the rubber bushings when the car is lowered.

Step 13: Tighten the Control Arm Mounting Bolts

• Use a torque wrench, 19mm socket, and 19mm combination wrench to tighten the front control arm mounting bolt: Torque to 110-125 Nm (81-92 ft-lbs).
• Use a torque wrench, 22mm socket, and 22mm combination wrench to tighten the rear control arm mounting bolt: Torque to 135-155 Nm (100-114 ft-lbs).
• Remove the floor jack from under the control arm after tightening.

Step 14: Reinstall Splash Shield Fasteners

• Use a 10mm socket and 1/2-inch drive ratchet to reinstall any splash shield bolts.
• Use a flat blade screwdriver to seat any plastic clips.
• Do not overtighten plastic shield fasteners.

Step 15: Repeat on the Other Side

• Repeat Steps 4-14 on the other front control arm.
• Control arms should be replaced in pairs when bushings or ball joints are worn on both sides.

Step 16: Reinstall the Front Wheels

• Place the wheels back on the hubs by hand.
• Install the lug nuts by hand first to avoid cross-threading.
• Use a 21mm lug nut socket and 1/2-inch drive ratchet to snug the lug nuts in a star pattern.

Step 17: Lower the Vehicle and Torque the Lug Nuts

• Use the floor jack to lift your Altima slightly off the jack stands.
• Remove the jack stands and lower the vehicle to the ground.
• Use a torque wrench and 21mm lug nut socket to tighten the lug nuts in a star pattern: Torque to 113 Nm (83 ft-lbs).

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✅ After Repair

• ✅ Bounce the front of the vehicle gently and listen for clunks.
• ✅ Turn the steering wheel lock-to-lock while parked and listen for binding or popping.
• ✅ Test drive slowly in a safe area first. Avoid highway speed until the vehicle feels stable.
• ✅ Schedule a four-wheel alignment as soon as possible. Replacing control arms changes suspension geometry.
• ✅ Recheck the lug nut torque after 25-50 miles: Torque to 113 Nm (83 ft-lbs).
• ✅ If the steering wheel is off-center, the tires squeal, or the car pulls, do not delay the alignment.

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💰 DIY vs Shop Cost

Shop Cost: $650-$1,100 (parts + labor)

DIY Cost: $180-$420 (parts only)

You Save: $470-$680 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours plus alignment time.

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🎯 Ready to get started?

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