🔧 F-150 - Rear Shock Absorber Replacement

On your F-150, the rear suspension uses shock absorbers (the front uses struts/coilover assemblies, which are a different job). Replacing worn rear shocks restores ride control, reduces bouncing, and improves braking stability over bumps.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

Assumption: Steps cover rear shocks (most common “shock” replacement).

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⚠️ Safety & Precautions

• 🛑 Never work under a truck supported only by a jack—use jack stands on the frame.
• 🛑 Keep the rear axle supported with a jack so it doesn’t drop when the shock is removed.
• 🛑 Wear safety glasses; rust and debris fall from the frame mounts.
• 🛑 Let the exhaust cool first; the shock area can be near hot components.
• 🔋 Battery disconnect is not required for rear shocks.

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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)
• Wheel chocks
• Lug wrench (21mm)
• Ratchet (3/8" drive)
• Ratchet (1/2" drive)
• Socket set (metric)
• 18mm socket
• 21mm socket
• 15mm wrench
• Breaker bar (1/2" drive)
• Torque wrench (20-200 ft-lbs)
• Pry bar
• Penetrating oil
• Wire brush
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear shock absorbers - Replace in pairs - Qty: 2
• Rear shock mounting hardware kit - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to P, and set the parking brake.
• Place wheel chocks in front of both front tires.
• Spray the upper and lower shock fasteners with penetrating oil and let it soak 5–10 minutes.
• If removing the rear wheels for easier access, slightly loosen the lug nuts with a 21mm lug wrench before lifting.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and support the rear

• Use a floor jack to lift the rear of the truck at a safe rear jacking point.
• Set the frame down onto jack stands (one on each side).
• Keep the floor jack lightly supporting the rear axle (this prevents the axle from dropping).

Step 2: Remove the rear wheel (recommended)

• Remove lug nuts with a 21mm lug wrench and take the wheel off.
• Slide the wheel under the frame as an extra safety backup.

Step 3: Remove the lower shock bolt

• Locate the bottom of the shock where it bolts to the axle mount.
• Clean exposed threads with a wire brush.
• Use a breaker bar with an 18mm socket or 21mm socket (varies by shock/hardware) to remove the lower bolt/nut.
• If the bolt is stuck, slightly raise/lower the axle with the floor jack to remove tension, then try again.

Step 4: Remove the upper shock fastener

• At the top mount, remove the upper fastener using a ratchet and the correct socket.
• If your shock uses an upper stud and nut, hold the stud (if needed) with a 15mm wrench while loosening the nut with a ratchet.
• Pull the shock out. Use a pry bar gently if it’s stuck in the mount.
• A “stud” is a fixed threaded post.

Step 5: Install the new shock

• Compare the new shock to the old one (length and mounting style).
• Install the top first: position the shock and start the upper nut/bolt by hand.
• Line up the lower mount by raising/lowering the axle with the floor jack, then insert the lower bolt by hand.
• Tighten fasteners snug with a ratchet (final torque comes later).

Step 6: Torque the shock fasteners

• Use a torque wrench to tighten the fasteners.
• Lower shock bolt: Torque to 115 Nm (85 ft-lbs)
• Upper shock fastener: Torque to 75 Nm (55 ft-lbs)
• Torque = final tightening using a torque wrench.

Step 7: Repeat on the other side

• Replace the second rear shock the same way.
• Replacing in pairs keeps the truck balanced left-to-right.

Step 8: Reinstall wheels and lower the truck

• Reinstall the wheel and hand-start all lug nuts.
• Lower the truck off the jack stands using the floor jack.
• Use a torque wrench to tighten lug nuts in a star pattern: Torque to 204 Nm (150 ft-lbs)

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✅ After Repair

• Visually confirm both shocks are seated correctly in the mounts and all fasteners are tight.
• Push down on the rear bumper and release: the truck should rebound once and settle (not keep bouncing).
• Test-drive at low speed first, then over small bumps to confirm no clunks or rattles.
• Recheck shock fasteners for tightness after 25–50 miles.

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💰 DIY vs Shop Cost

Shop Cost: $350-$700 (parts + labor)

DIY Cost: $120-$350 (parts only)

You Save: $230-$350 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.0 hours.

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🎯 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.