🔧 Mustang - Front Strut Replacement

Replacing the front struts on your Mustang restores ride control, steering response, and tire contact with the road. On your Mustang, the front strut is part of the MacPherson-style front suspension, meaning the spring and upper mount are attached to the strut assembly.

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

---

⚠️ Safety & Precautions

• ⚠️ Coil springs are under heavy tension and can cause serious injury if released incorrectly.
• ⚠️ If replacing only the bare strut, use a quality external spring compressor. A spring compressor safely squeezes the coil spring so the strut can be disassembled.
• ⚠️ For a beginner, complete pre-assembled strut assemblies are much safer than reusing the original spring.
• ⚠️ Always support your Mustang with jack stands. Never work under a vehicle supported only by a floor jack.
• ⚠️ Do not let the brake caliper or steering knuckle hang by the brake hose or ABS wire.
• ⚠️ Front suspension work should be followed by a wheel alignment.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 1/2-inch drive breaker bar
• 1/2-inch drive torque wrench
• 3/8-inch drive ratchet
• 13mm socket
• 15mm socket
• 18mm socket
• 21mm socket
• 22mm socket
• 10mm wrench
• 18mm wrench
• 21mm wrench
• Flat trim clip removal tool
• Paint marker
• Rubber mallet
• Pry bar
• Bungee cord
• External coil spring compressor (specialty)
• Safety glasses
• Mechanic gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front strut assemblies - Left and Right - Qty: 2
• Front upper strut mounts - Qty: 2
• Front strut bearing plates - Qty: 2
• Front strut dust boots and bump stops - Qty: 2
• Front strut-to-knuckle bolts - Qty: 4
• Front strut upper mount nuts - Qty: 6
• Front stabilizer bar link nuts - Qty: 2

---

📋 Before You Begin

• Park your Mustang on flat, solid ground.
• Set the parking brake and place wheel chocks behind the rear wheels.
• Loosen the front lug nuts slightly before lifting the vehicle.
• Open the hood so you can access the upper strut mount nuts.
• Use a paint marker to mark the position of the strut-to-knuckle connection before removal. This helps keep alignment close enough to drive to an alignment shop.
• Plan to replace front struts in pairs. Do not replace only one side.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Front Wheel Lug Nuts

• Use a 21mm socket and 1/2-inch drive breaker bar to loosen the front lug nuts about half a turn.
• Do not remove the lug nuts yet.
• Break them loose on the ground.

Step 2: Raise and Support the Front of the Vehicle

• Use a floor jack to lift the front of your Mustang at the approved front jacking point.
• Place jack stands under the front pinch weld or approved support points.
• Lower the vehicle gently onto the jack stands.
• Give the vehicle a light push to make sure it is stable before working.

Step 3: Remove the Front Wheels

• Use a 21mm socket to remove the loosened lug nuts.
• Remove both front wheels and place them flat under the vehicle as an extra safety backup.

Step 4: Mark the Strut Position

• Use a paint marker to draw alignment marks across the strut body and steering knuckle.
• The steering knuckle is the large metal part that holds the wheel hub and connects to the suspension.
• These marks help you install the new strut in a similar position before the final alignment.

Step 5: Disconnect the Brake Hose and ABS Wire Brackets

• Use a 10mm wrench or 10mm socket to remove the brake hose bracket bolt from the strut.
• Use a flat trim clip removal tool to gently release any ABS wire clips from the strut.
• Move the hose and wire aside without stretching them.
• Never pull on the ABS wire.

Step 6: Disconnect the Stabilizer Bar Link from the Strut

• The stabilizer bar link connects the sway bar to the strut and helps reduce body roll while turning.
• Use an 18mm socket and 18mm wrench to remove the stabilizer bar link nut from the strut bracket.
• If the stud spins, hold the center of the stud with the correct wrench while turning the nut with the 18mm wrench.
• Move the stabilizer link aside carefully.

Step 7: Support the Steering Knuckle

• Use a floor jack under the lower control arm or steering knuckle area to lightly support the suspension.
• Use a bungee cord to support the steering knuckle if needed.
• This prevents strain on the brake hose and lower ball joint when the strut is removed.

Step 8: Remove the Lower Strut-to-Knuckle Bolts

• Use a 21mm socket, 22mm socket, and 21mm wrench as needed to remove the two large strut-to-knuckle nuts and bolts.
• These bolts may be tight. Use a 1/2-inch drive breaker bar for extra leverage.
• Use a rubber mallet to tap the bolts out if they are stuck.
• Do not hammer directly on the threaded ends unless the nuts are installed flush to protect the threads.

Step 9: Remove the Upper Strut Mount Nuts

• From under the hood, locate the three upper strut mount nuts at the top of the strut tower.
• Use a 13mm socket and 3/8-inch drive ratchet to remove the upper strut mount nuts.
• Hold the strut with one hand while removing the last nut so it does not fall.
• Do not remove the large center nut unless the coil spring is safely compressed.

Step 10: Remove the Strut Assembly

• Carefully lower and remove the strut assembly from the wheel well.
• Use a pry bar only if needed to create clearance between the strut and knuckle.
• Avoid pulling on the brake hose, ABS wire, or fender liner.

Step 11: Transfer the Spring Only If Reusing Original Components

• If you are installing a complete loaded strut assembly, skip to Step 12.
• If you are installing a bare strut, use an external coil spring compressor to compress the spring evenly on opposite sides.
• Use a 21mm socket only after the spring is fully compressed to remove the center shaft nut.
• Transfer the spring, mount, bearing plate, dust boot, and bump stop to the new strut.
• Install the upper shaft nut and tighten it to the strut manufacturer’s supplied specification.
• Loaded struts are safest for beginners.

Step 12: Install the New Strut Assembly

• Guide the new strut assembly up into the strut tower by hand.
• Install the three new upper mount nuts finger-tight.
• Use a 13mm socket and torque wrench to tighten the upper strut mount nuts to Torque to 35 Nm (26 ft-lbs).

Step 13: Attach the Strut to the Steering Knuckle

• Line up your paint marks as closely as possible.
• Use a floor jack to gently raise or lower the knuckle until the bolt holes align.
• Install the new lower strut-to-knuckle bolts and nuts by hand first.
• Use a 21mm socket, 22mm socket, 21mm wrench, and torque wrench to tighten the fasteners to Torque to 184 Nm (136 ft-lbs).

Step 14: Reconnect the Stabilizer Bar Link

• Insert the stabilizer bar link stud into the strut bracket.
• Install the new nut by hand.
• Use an 18mm socket, 18mm wrench, and torque wrench to tighten the stabilizer bar link nut to Torque to 85 Nm (63 ft-lbs).

Step 15: Reconnect the Brake Hose and ABS Wire Brackets

• Use a 10mm socket or 10mm wrench to reinstall the brake hose bracket bolt.
• Tighten the bracket bolt snugly to Torque to 10 Nm (89 in-lbs).
• Use your hands and the flat trim clip removal tool if needed to reinstall the ABS wire clips.
• Make sure the hose and wire are not twisted or stretched.

Step 16: Repeat on the Other Side

• Repeat Steps 4 through 15 on the opposite front strut.
• Use the same tools and the same safety steps.
• Keep left and right parts separate if they are side-specific.

Step 17: Reinstall the Front Wheels

• Place each wheel back onto the hub.
• Start all lug nuts by hand to avoid cross-threading.
• Use a 21mm socket to snug the lug nuts in a star pattern.

Step 18: Lower the Vehicle and Torque the Wheels

• Use the floor jack to lift the vehicle slightly off the jack stands.
• Remove the jack stands.
• Lower your Mustang fully to the ground.
• Use a 21mm socket and torque wrench to tighten the lug nuts in a star pattern to Torque to 204 Nm (150 ft-lbs).

---

✅ After Repair

• ✅ Bounce the front of the car gently by hand and listen for clunks or loose parts.
• ✅ Turn the steering wheel lock-to-lock while parked and check that brake hoses and ABS wires do not stretch.
• ✅ Take a slow test drive first. Listen for rattles, popping, or pulling.
• ✅ Schedule a professional front-end alignment as soon as possible.
• ✅ Recheck front lug nut torque after 50-100 miles.

---

💰 DIY vs Shop Cost

Shop Cost: $850-$1,400 (parts + labor)

DIY Cost: $350-$750 (parts only)

You Save: $500-$650 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2.5-4 hours plus alignment.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.