🔧 Sentra - Front Strut Replacement

Your Sentra uses MacPherson front struts, which combine the shock absorber, coil spring, and upper mount. For a beginner, complete preassembled strut assemblies are strongly recommended because they avoid handling a compressed coil spring.

Replace both front struts together, then have a professional four-wheel alignment performed.

Difficulty Level: Intermediate | Estimated Time: 3-5 hours

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⚠️ Safety & Precautions

• Never work under your Sentra while it is supported only by a floor jack; use jack stands on the reinforced front support points.
• Do not loosen the large center nut on top of the strut. It retains a heavily compressed coil spring.
• Use complete preassembled struts unless you have professional spring-compressing equipment and training.
• Support the steering knuckle after disconnecting the strut so the brake hose and CV axle are not stretched.
• Keep your hands away from the space between the strut and steering knuckle while separating them.
• Battery disconnection is not required.

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🔧 Required Tools

You'll need the following tools for this repair:

• 2-ton minimum floor jack
• 2-ton minimum jack stands
• Wheel chocks
• 21mm deep socket
• 22mm deep socket
• 18mm combination wrench
• 21mm combination wrench
• 22mm combination wrench
• 3/8-inch-drive ratchet
• 1/2-inch-drive breaker bar
• 1/2-inch-drive torque wrench rated 30-200 Nm
• Flat-blade screwdriver
• Needle-nose pliers
• Brass drift punch
• 16-ounce dead-blow hammer
• 24-inch pry bar
• Paint marker
• Mechanic’s wire rated 23 kg minimum
• Nitrile mechanic gloves
• ANSI Z87.1 safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Complete front strut assemblies with springs and upper mounts - Qty: 2 - Replace in pairs
• Front strut-to-steering-knuckle locking nuts - Qty: 4
• Front stabilizer-link locking nuts - Qty: 2
• Penetrating oil - Qty: 1 can

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📋 Before You Begin

• Park your Sentra on level, solid ground. Shift into Park or first gear, apply the parking brake, and switch off the ignition.
• Place wheel chocks securely behind both rear tires.
• Verify that each complete assembly is marked for the correct side. Left means driver side; right means passenger side.
• Do not begin if the replacement assembly is held together with temporary shipping restraints or appears damaged.
• Arrange a professional wheel alignment immediately after replacement.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Front Wheel Nuts

• Use the 21mm deep socket and 1/2-inch breaker bar to loosen each front wheel nut about one-quarter turn.
• Do not remove the nuts while the tires are still carrying the vehicle’s weight.

Step 2: Raise and Support the Front

• Position the 2-ton floor jack under the front-center lifting point and raise your Sentra.
• Place the 2-ton jack stands beneath the reinforced front side support points, then lower the vehicle onto them.
• Gently push the body to confirm it is stable before working underneath.
• Use the 21mm deep socket and ratchet to remove the wheel nuts and both front wheels.

Step 3: Mark the Original Strut Position

• Use the paint marker to draw alignment marks across the strut flange and steering knuckle.
• These marks help keep the position close enough for the drive to the alignment shop; they do not replace an alignment.

Step 4: Release the Brake Hose and ABS Wire

• Use the flat-blade screwdriver and needle-nose pliers to release the brake-hose retaining clip from the strut bracket.
• Carefully remove the ABS wheel-speed sensor wire from its strut retainers by hand or with the flat-blade screwdriver.
• Do not pull, twist, or hang anything from the brake hose or ABS wire.

Step 5: Disconnect the Stabilizer Link

• Apply penetrating oil to the stabilizer-link nut where the link attaches to the strut.
• Use the 18mm combination wrench and appropriate socket from the listed set to remove the nut while preventing the link stud from turning.
• Swing the link away from the strut without forcing its rubber boots.
• A stabilizer link connects the suspension to the anti-roll bar and may require holding its stud while loosening the nut.

Step 6: Support the Steering Knuckle

• Use mechanic’s wire to support the steering knuckle from a strong body or subframe point.
• Leave enough movement to separate the strut, but do not let the knuckle pull outward on the CV axle.

Step 7: Remove the Strut-to-Knuckle Fasteners

• Apply penetrating oil to the two large lower strut fasteners.
• Use the 21mm and 22mm combination wrenches, 22mm deep socket, and breaker bar as required to remove the two locking nuts.
• Use the brass drift punch and dead-blow hammer to drive the bolts out without damaging their threads.
• Use the 24-inch pry bar only as needed to separate the strut flange from the steering knuckle.
• Keep the supported knuckle upright so the CV axle does not pull from the transmission.

Step 8: Remove the Upper Mount Nuts

• Open the hood and locate the three small nuts surrounding the strut’s center nut.
• Support the strut from below with one hand.
• Use the appropriate socket from the listed set and 3/8-inch ratchet to remove only the three outer upper-mount nuts.
• Do not loosen the large center nut.
• Lower the complete strut assembly carefully through the wheel opening.

Step 9: Install the Complete Strut Assembly

• Compare the old and new assemblies. Confirm that the brake-hose bracket, stabilizer-link bracket, and lower flange face the same directions.
• Guide the new assembly into the strut tower and start all three upper-mount nuts by hand.
• Use the torque wrench and appropriate socket to tighten the upper-mount nuts evenly to 40 Nm (30 ft-lbs).
• Do not use an impact wrench on the upper mount.

Step 10: Attach the Steering Knuckle

• Align the steering knuckle inside the new strut flange using the paint marks as a rough reference.
• Use the brass drift punch to align the holes, then insert both bolts by hand.
• Install new locking nuts and use the 21mm and 22mm tools to snug them.
• Use the torque wrench, 22mm deep socket, and 21mm or 22mm wrench to tighten both fasteners to 177 Nm (131 ft-lbs).
• Start every nut by hand to prevent cross-threading.

Step 11: Reconnect the Stabilizer Link

• Insert the stabilizer-link stud into its bracket and install a new locking nut by hand.
• Use the 18mm combination wrench and appropriate socket to keep the stud from spinning.
• Use the torque wrench and appropriate socket to tighten the nut to 75 Nm (55 ft-lbs).

Step 12: Refit the Brake Hose and ABS Wire

• Place the brake hose into its bracket without twisting it.
• Use the needle-nose pliers to install the retaining clip fully.
• Press the ABS wire into every original retainer by hand.
• Turn the steering from side to side by hand and confirm neither line becomes tight or contacts the tire area.

Step 13: Replace the Opposite Strut

• Repeat Steps 3 through 12 on the other side using the same listed tools and torque specifications.
• Keep left- and right-side assemblies correctly positioned.

Step 14: Reinstall the Wheels

• Install both wheels and start every wheel nut by hand.
• Use the 21mm deep socket and ratchet to snug the nuts in a crisscross pattern.
• Use the floor jack to raise your Sentra slightly, remove the jack stands, and lower it until the tires touch the ground.
• Use the torque wrench and 21mm deep socket to tighten the wheel nuts in a crisscross pattern to 113 Nm (83 ft-lbs).

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✅ After Repair

• Inspect both sides and confirm every fastener, brake-hose clip, and ABS-wire retainer is installed.
• Press down firmly on each front corner. The body should rise and settle without clunking.
• Start your Sentra and verify the ABS and stability-control warning lights go out normally.
• Drive slowly in a safe area. Listen for knocking and verify the steering returns smoothly.
• Avoid high speeds and hard braking until a professional four-wheel alignment is completed.
• Have the alignment performed immediately because strut removal changes front camber and toe.
• Recheck wheel-nut torque to 113 Nm (83 ft-lbs) after 80-160 km.

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💰 DIY vs Shop Cost

Shop Cost: ₹35,000-₹65,000 (parts, labor, and alignment)

DIY Cost: ₹20,000-₹42,000 (parts and alignment)

You Save: ₹15,000-₹23,000 by doing it yourself!

Local labor and imported-part prices vary. This repair takes a shop approximately 2.5-4 hours.

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🎯 Ready to get started?

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