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F-150 Spark plugs Install Guide

Your F-150

Pick your year to see what fits.

This page covers the US F-150, not the Raptor or PowerBoost.

Restores lost power
Medium$120–$2501–2 hrs
All F-150 mods

Why do it

Worn plugs cost power and throttle response.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Before you start

  • Work on a cold engine. Do one plug at a time.

Steps

  1. Remove the coils

    • Pull the coil packs.
    Watch this step (Truck Stuff, on a 3.5L) (0:38–1:58)
  2. Remove the old plug

    • Unscrew the plug.
    Watch this step (1:58–2:48)
  3. Fit the new plug

    • Thread it in and torque it.
    Watch this step (2:48–4:01)
  4. Put it back

    • Refit the coils.
    Watch this step (4:01–5:05)

How to know it worked

Did this guide work for you?

Safety first

  • Park on flat ground, set the parking brake and chock the wheels.
  • Never get under a car held up only by a jack. Use jack stands.
  • Let the engine and exhaust cool first.
  • Disconnect the battery before unplugging electrical parts.
  • Wear safety glasses.
  • If something doesn't match your car, stop and ask a shop.

Follow your part's instructions and your service manual's torque specs.

Spark Plug install guides for other cars

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