🔧 Altima - Front Lower Ball Joint (Control Arm) Replacement

On your Altima, the front lower ball joint is built into the front lower control arm and is not serviced separately. To replace a worn ball joint, you replace the entire lower control arm assembly on that side.

Difficulty Level: Advanced (first-timer but doable) | Estimated Time: 3–4 hours per side

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⚠️ Safety & Precautions

• ⚠️ Always support the car with jack stands, never rely only on a floor jack.
• ⚠️ Wear safety glasses and mechanic gloves; you will work near rust, dirt, and pinch points.
• ⚠️ Chock the rear wheels so the car cannot roll while the front is lifted.
• ⚠️ Suspension parts are under tension; keep fingers clear when separating the ball joint from the steering knuckle.
• ⚠️ If any fastener is badly rusted or damaged, replace it before driving.
• ⚠️ An alignment is strongly recommended after replacing a control arm/ball joint.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum, Qty: 2)
• Wheel chocks
• Lug wrench or 21mm socket
• Socket set (10mm–21mm)
• Ratchet 3/8"
• Breaker bar 1/2"
• Torque wrench 3/8" or 1/2" drive
• Open-end/box wrench set (10mm–21mm)
• Pry bar 18–24"
• Ball joint separator (pickle fork) (specialty)
• Hammer 2–3 lb
• Flathead screwdriver medium
• Needle-nose pliers
• Wire brush small
• Penetrating oil spray
• Paint marker or white correction pen
• Mechanic gloves
• Safety glasses
• Shop light or flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front lower control arm assembly (left, with ball joint and bushings) - Qty: 1 per side replaced
• Front lower control arm assembly (right, with ball joint and bushings) - Qty: 1 per side replaced
• Front lower control arm mounting bolts/nuts kit - Qty: 1 (recommended)
• Ball joint pinch bolt and nut - Qty: 1 per side (if not in kit)
• Front sway bar end link nut - Qty: 1 per side (if damaged/corroded)
• Anti-seize compound - Qty: small tube
• Rust penetrant spray - Qty: 1 can

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📋 Before You Begin

• Park the Altima on a flat, solid surface with plenty of room around the front.
• Set the parking brake and place wheel chocks behind both rear wheels.
• Loosen the front wheel lug nuts slightly with a lug wrench or 21mm socket before lifting the car.
• Plan to work on one side at a time so you can look at the other side as a reference.
• Spray all visible control arm bolts and the ball joint pinch area with penetrating oil 10–15 minutes before starting. Helps with stuck bolts
• Take a clear picture of the control arm, ball joint, and sway bar link before removal. Good for reassembly reference

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Safely lift and support the front of the car

• Use the floor jack under the front center jacking point (behind the radiator support) to lift the front of the Altima.
• Place jack stands under the front pinch welds or frame rail lift points on both sides.
• Lower the car gently onto the jack stands using the floor jack; shake the car slightly by hand to confirm it is stable.
• Remove the front wheel on the side you are working on with a 21mm socket.

Step 2: Inspect and identify connection points

• With the wheel off, locate the lower control arm: it runs from the subframe (toward the center of the car) out to the steering knuckle (where the wheel hub is).
• The ball joint is the round joint at the outer end of the control arm where it meets the steering knuckle.
• Note the control arm front and rear mounting points to the subframe, and any attached components (like a sway bar end link).
• Use a paint marker to mark the current positions of the control arm bolts relative to the subframe. Helps with alignment reference

Step 3: Disconnect the sway bar end link (if attached to the control arm)

• If your control arm has the sway bar end link passing through or bolted to it, use a socket (usually 17mm–19mm) and a wrench to remove the nut at the control arm.
• Hold the end link stud with the wrench if it spins while loosening.
• Set the end link aside; support it so it does not hang by the rubber boot, using a zip tie or wire if needed.

Step 4: Remove the ball joint pinch bolt from the steering knuckle

• Locate the clamp area on the steering knuckle that holds the ball joint stud.
• Use a wire brush to clean rust from the bolt and area.
• Spray the area again with penetrating oil.
• Use the correct socket (commonly 17mm or 18mm) and a breaker bar to remove the ball joint pinch bolt and nut from the steering knuckle.
• Keep this bolt and nut if they are in good condition or replace with new ones.

Step 5: Separate the ball joint from the steering knuckle

• Insert the ball joint separator (pickle fork) between the lower control arm ball joint and the steering knuckle.
• Tap the pickle fork with the hammer to force the ball joint stud out of the knuckle clamp.
• If it is stubborn, apply more penetrating oil and tap on the side of the knuckle with the hammer while prying with a pry bar. Avoid hitting the CV axle
• Once free, let the steering knuckle move slightly but do not stress the brake hose or CV axle.

Step 6: Remove the rear control arm mounting bolt

• Follow the control arm inward to the rear bushing mount at the subframe.
• Use a socket (usually 18mm–19mm) and breaker bar to loosen the rear mounting bolt.
• Remove the bolt completely and note any washers or spacers orientation.
• Torque on install will be: 125 Nm (92 ft-lbs) (typical Nissan spec for this location).

Step 7: Remove the front control arm mounting bolt

• Locate the front bushing mount where the control arm attaches to the front part of the subframe.
• Use a socket (usually 18mm–19mm) and breaker bar to remove that bolt.
• You may need to slightly lift or lower the control arm with a floor jack under the ball joint area to relieve tension on the bolt.
• Torque on install will be: 125 Nm (92 ft-lbs) (typical Nissan front mount spec).

Step 8: Remove the control arm from the vehicle

• With the front and rear bolts removed and the ball joint free, wiggle and pull the control arm out of the subframe.
• If needed, use a pry bar gently at the bushings to free it.
• Compare the old control arm to the new one on the ground to confirm they match in shape, mounting points, and ball joint orientation.

Step 9: Install the new control arm into the subframe

• Slide the new control arm into the subframe, aligning the front and rear bushings with their mounting holes.
• Install the front bolt finger-tight by hand using the socket; do not fully tighten yet.
• Install the rear bolt finger-tight by hand.
• Do not torque the bushing bolts until the suspension is at normal ride height. Prevents bushing twist

Step 10: Insert the ball joint into the steering knuckle

• Use the floor jack under the ball joint area to gently raise the control arm until the ball joint stud lines up with the steering knuckle clamp.
• Push or tap the ball joint stud fully into the knuckle using the hammer on the arm (not on the stud threads).
• Reinstall the ball joint pinch bolt and nut with the correct socket.
• Torque the ball joint pinch bolt to: 70 Nm (52 ft-lbs).

Step 11: Tighten control arm bushing bolts at ride height

• Keep the floor jack under the ball joint and raise the control arm until the hub center is roughly at its normal ride height position (wheel center about where it would be with the car on the ground).
• With the arm supported at this height, tighten the front bushing bolt using the correct socket and torque wrench to 125 Nm (92 ft-lbs).
• Tighten the rear bushing bolt with the torque wrench to 125 Nm (92 ft-lbs).
• Tightening at ride height prevents bushing damage

Step 12: Reattach the sway bar end link

• Position the sway bar end link back through or onto the control arm mount.
• Install the end link nut using the correct socket and hold the stud with a wrench if it spins.
• Torque the sway bar end link nut to: 65 Nm (48 ft-lbs).

Step 13: Reinstall the wheel and lower the car

• Apply a light coat of anti-seize compound on the wheel hub face if desired.
• Install the wheel and thread the lug nuts by hand.
• Use the floor jack to lift the car slightly, remove the jack stands, then lower the Altima to the ground.
• Torque the lug nuts in a star pattern with a torque wrench and 21mm socket to 110 Nm (81 ft-lbs).

Step 14: Repeat for the other side (recommended in pairs)

• It is best practice to replace both left and right lower control arms so the suspension wears evenly.
• Repeat Steps 1–13 for the other side if replacing both.

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✅ After Repair

• Start the engine and slowly turn the steering wheel fully left and right while stationary, listening for clunks or binding.
• Drive at low speed in a safe area and test for noises over small bumps and during gentle braking.
• Schedule a four-wheel alignment as soon as possible; replacing control arms will affect alignment and tire wear.
• After the first short drive, recheck all accessible bolts and lug nuts for tightness with the torque wrench.

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💰 DIY vs Shop Cost

Shop Cost: $700–$1,000 for both front lower control arms (parts + labor)

DIY Cost: $200–$400 for both front lower control arms (parts only)

You Save: $300–$800 by doing it yourself!

Shop labor rates typically run $100–$150/hour. This repair takes a shop about 2–3 hours.

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