🔧 Corolla - Strut Replacement

On your Corolla, the front suspension uses struts (strut + spring assembly), while the rear typically uses shocks (not struts). Replacing worn struts restores ride control, braking stability, and tire wear.

Difficulty Level: Advanced | Estimated Time: 3-6 hours (front pair); 1-2 hours (rear shocks)

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⚠️ Safety & Precautions

• ⚠️ If you are reusing springs, a coil spring compressor is required—compressed springs store dangerous energy.
• ⚠️ Always support the car with jack stands on solid, level ground; never rely on a floor jack alone.
• ⚠️ Keep fingers clear of pinch points at the knuckle/strut joint and while lowering the control arm.
• ⚠️ Do not let the steering knuckle hang by the brake hose/ABS wire—support it.
• 🔋 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
• Lug nut socket 21mm
• Ratchet 3/8"
• Ratchet 1/2"
• Breaker bar 1/2"
• Torque wrench 20–200 ft-lbs
• Socket set 10mm–19mm
• Wrench set 10mm–19mm
• Hex key 6mm
• Pry bar
• Hammer
• Needle-nose pliers
• Penetrating oil
• Paint marker
• Bungee cord
• Coil spring compressor (specialty)
• Strut nut pass-through socket set (specialty)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front strut assemblies (quick-struts) - Replace in pairs - Qty: 2
• OR front struts (cartridges) - Replace in pairs - Qty: 2
• Front strut mounts with bearings - Replace in pairs - Qty: 2
• Front bump stops and dust boots - Replace in pairs - Qty: 2
• Front sway bar end links - Recommended if loose/noisy - Qty: 2
• Rear shocks - Replace in pairs - Qty: 2
• Anti-seize compound - Qty: 1

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Break the front lug nuts loose with a 21mm socket before lifting.
• Spray penetrating oil on the front strut-to-knuckle bolts and sway bar end link nut.
• If you are not using quick-struts (complete assemblies), plan for extra time and use a coil spring compressor. A coil spring compressor is a clamp tool that safely compresses the spring so you can remove the top mount.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and remove the front wheels

• Use a floor jack to lift the front, then support with jack stands at the proper lift points.
• Remove lug nuts with a 21mm socket and take both front wheels off.

Step 2: Disconnect brackets and the sway bar end link from the strut

• Remove the brake hose/ABS wire brackets from the strut using a 10mm socket.
• Remove the sway bar end link nut from the strut using a 17mm wrench while holding the stud with a 6mm hex key.
• Support the knuckle with a bungee cord.

Step 3: Mark camber position (if equipped) and remove strut-to-knuckle bolts

• Use a paint marker to mark the relationship between the strut and steering knuckle.
• Remove the two strut-to-knuckle bolts/nuts using a 19mm socket, 19mm wrench, and a breaker bar.
• Tap bolts out with a hammer if needed (don’t mushroom the threads).
• On installation: Torque to 177 Nm (131 ft-lbs).

Step 4: Remove the strut assembly from the body

• Open the hood and locate the three strut mount nuts at the top of the strut tower.
• Support the strut from below, then remove the three top nuts using a 14mm socket.
• Lift the strut assembly out of the wheel well.

Step 5A: Install quick-strut (complete assembly)

• Place the quick-strut into position and hand-thread the three top mount nuts using a 14mm socket.
• Slide the knuckle onto the strut and install the two lower bolts/nuts using a 19mm socket and 19mm wrench.
• Torque the top mount nuts to 39 Nm (29 ft-lbs) using a torque wrench.
• Torque the strut-to-knuckle bolts to 177 Nm (131 ft-lbs) using a torque wrench.

Step 5B: If reusing springs (swap parts onto new strut)

• Install a coil spring compressor (specialty) on the spring and compress evenly until the spring is loose on the mount.
• Remove the center strut shaft nut using a strut nut pass-through socket set (specialty) (hold the shaft as needed).
• Move over the mount/bearing, boot, and bump stop in the same orientation.
• Install the new strut and tighten the center shaft nut, then slowly decompress the spring and remove the compressor.
• Reinstall the assembled strut like Step 5A and torque fasteners the same.

Step 6: Reconnect sway link and brackets

• Reconnect the sway bar end link using a 17mm wrench and 6mm hex key.
• Torque the sway bar end link nut to 74 Nm (55 ft-lbs) using a torque wrench.
• Reinstall brake hose/ABS brackets using a 10mm socket.

Step 7: Reinstall wheels and lower the car

• Install wheels and hand-thread lug nuts.
• Lower the car and torque lug nuts in a star pattern using a torque wrench: 103 Nm (76 ft-lbs).

Step 8 (Rear): Replace rear shocks (if you’re doing the rear too)

• Chock front wheels, lift rear with a floor jack, and support with jack stands.
• Remove rear wheels with a 21mm socket.
• Support the rear axle/beam with the floor jack.
• Remove the lower shock bolt using a 17mm socket and 17mm wrench, then install the new shock.
• Torque the rear lower shock bolt to 103 Nm (76 ft-lbs) using a torque wrench.
• Access the upper shock nuts inside the trunk/side trim and remove/install using a 14mm socket.
• Torque the rear upper shock nuts to 19 Nm (14 ft-lbs) using a torque wrench.

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✅ After Repair

• Start the car and turn the steering wheel lock-to-lock to confirm nothing binds or pulls.
• Take a short, slow test drive and listen for clunks over bumps.
• Get a 4-wheel alignment as soon as possible after replacing front struts.
• Recheck lug nut torque after 25–50 miles using a torque wrench.

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💰 DIY vs Shop Cost

Shop Cost: $800-$1,600 (parts + labor, front struts; more if rear shocks added)

DIY Cost: $250-$900 (parts only, depending on quick-struts vs struts + mounts)

You Save: $550-$700+ by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-6 hours.

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🎯 Ready to get started?

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