🔧 Altima - Lower Ball Joint Replacement

On your Altima, the front lower ball joints are serviced with the front lower control arm assembly. The ball joint is built into the arm, so the correct repair is to replace the lower control arm, then have the front alignment checked.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours per side

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⚠️ Safety & Precautions

• ⚠️ Support your Altima with jack stands on solid, level ground. Never work under a car held only by a jack.
• ⚠️ Wear safety glasses and gloves. The ball joint can pop loose suddenly when separated.
• ⚠️ Do not hammer on the ball joint stud or axle shaft.
• ⚠️ Tighten the inner control arm bolts with the suspension loaded at ride height. This prevents rubber bushing damage.
• ⚠️ A wheel alignment is required after replacing a lower control arm.
• ⚠️ Battery disconnect is not required for this repair.

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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 (10-150 ft-lbs)
• 17mm socket
• 18mm socket
• 19mm socket
• 17mm wrench
• 18mm wrench
• 19mm wrench
• Needle-nose pliers
• Ball joint separator (specialty)
• Pry bar 18-inch
• Dead blow hammer 2-lb
• Paint marker
• Penetrating oil

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front lower control arm with ball joint - driver side - Qty: 1 if replacing driver side
• Front lower control arm with ball joint - passenger side - Qty: 1 if replacing passenger side
• Ball joint castle nut or lock nut - Qty: 1 per side if not included
• Ball joint cotter pin - Qty: 1 per side if equipped
• Lower control arm mounting hardware - Qty: 1 kit per side if damaged or corroded

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📋 Before You Begin

• Park your Altima on level ground.
• Set the parking brake and place wheel chocks behind the rear wheels.
• Spray penetrating oil on the ball joint nut and lower control arm mounting bolts.
• Use a paint marker to mark the position of the old control arm bolts before removal.
• Work on one side at a time so the other side remains available for comparison.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Front Wheel

• Use a 21mm lug nut socket and 1/2-inch breaker bar to loosen the lug nuts 1/2 turn.
• Keep the tire on the ground while loosening the nuts.
• Loosen first, lift second.

Step 2: Raise and Support the Vehicle

• Use a floor jack to lift the front of your Altima at the front lifting point.
• Place jack stands under the approved front support points or pinch welds.
• Lower the vehicle gently onto the jack stands.
• Shake the vehicle lightly by hand to confirm it is stable before removing the wheel.

Step 3: Remove the Wheel

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

Step 4: Locate the Lower Ball Joint

• Look behind the brake rotor at the lower control arm.
• The ball joint is the pivot joint where the outer end of the lower control arm connects to the steering knuckle.
• The steering knuckle is the large metal part that holds the wheel hub and brake rotor.

Step 5: Remove the Ball Joint Nut

• If a cotter pin is installed, use needle-nose pliers to straighten and remove it.
• Use a 19mm socket or 19mm wrench to remove the lower ball joint nut.
• If the nut is rusty, apply penetrating oil and wait a few minutes before trying again.

Step 6: Separate the Ball Joint from the Knuckle

• Install the ball joint separator between the lower control arm and steering knuckle.
• A ball joint separator is a clamp-style tool that safely presses the joint apart.
• Use the correct wrench or socket for the separator tool and tighten it until the ball joint pops free.
• If needed, use a 2-lb dead blow hammer to tap the side of the steering knuckle while the separator is under tension.
• Do not hit the brake rotor, axle shaft, or ball joint threads.

Step 7: Remove the Lower Control Arm Mounting Bolts

• Use a paint marker to mark the original bolt and bracket positions.
• Use a 17mm socket and 17mm wrench to remove the front lower control arm mounting bolt.
• Use an 18mm or 19mm socket and matching wrench to remove the rear lower control arm mounting bolt.
• Support the arm by hand as the last bolt comes out.

Step 8: Remove the Old Lower Control Arm

• Use an 18-inch pry bar to gently work the control arm out of the subframe brackets if it is stuck.
• Remove the lower control arm from the vehicle.
• Compare the new arm with the old arm before installation.
• Make sure the new ball joint, bushings, and mounting points match the old assembly.

Step 9: Install the New Lower Control Arm

• Slide the new lower control arm into the subframe brackets.
• Install the front and rear mounting bolts by hand first.
• Use a 17mm socket and 17mm wrench to snug the front mounting bolt.
• Use an 18mm or 19mm socket and matching wrench to snug the rear mounting bolt.
• Do not fully tighten the control arm bolts yet.

Step 10: Attach the Ball Joint to the Steering Knuckle

• Guide the new ball joint stud into the steering knuckle by hand.
• Install the new ball joint nut by hand first to avoid cross-threading.
• Use a 19mm socket and torque wrench to tighten the ball joint nut to Torque to 55-65 Nm (41-48 ft-lbs).
• If a cotter pin is used, keep tightening slightly until the cotter pin hole lines up.
• Do not loosen the nut to line up the cotter pin hole.
• Use needle-nose pliers to install and bend the new cotter pin if equipped.

Step 11: Load the Suspension Before Final Tightening

• Place the floor jack under the outer end of the lower control arm.
• Slowly raise the lower control arm until it sits close to normal ride height.
• Ride height means the suspension position when the vehicle is sitting on its wheels.
• Keep the jack stands in place while loading the suspension.

Step 12: Torque the Lower Control Arm Bolts

• Use a 17mm socket, 17mm wrench, and torque wrench to tighten the front control arm bolt to Torque to 95-115 Nm (70-85 ft-lbs).
• Use an 18mm or 19mm socket, matching wrench, and torque wrench to tighten the rear control arm bolt to Torque to 120-140 Nm (89-103 ft-lbs).
• Tighten bushings at ride height.

Step 13: Reinstall the Wheel

• Put the wheel back onto the hub.
• Use a 21mm lug nut socket and 1/2-inch ratchet to install the lug nuts by hand.
• Snug the lug nuts in a star pattern so the wheel seats evenly.

Step 14: Lower the Vehicle and Torque the Lug Nuts

• Use the floor jack to lift the vehicle slightly off the jack stands.
• Remove the jack stands.
• Lower the vehicle until the tire just touches the ground.
• Use a 21mm lug nut socket and torque wrench to tighten the lug nuts in a star pattern to Torque to 113 Nm (83 ft-lbs).
• Lower the vehicle completely.

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✅ After Repair

• ✅ Turn the steering wheel fully left and right while parked. Listen for clunks or scraping.
• ✅ Test drive slowly on a quiet road first.
• ✅ Schedule a front wheel alignment as soon as possible.
• ✅ Recheck lug nut torque after 25-50 miles.
• ✅ If the steering wheel is off-center, the car pulls, or the tire squeals, do not continue highway driving until aligned.

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💰 DIY vs Shop Cost

Shop Cost: $350-$650 per side, plus $100-$160 for alignment

DIY Cost: $90-$220 per side for parts only

You Save: $250-$430 per side by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 hours per side.

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