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Bronco Spark plugs Install Guide

Your Bronco

Pick your year to see what fits.

This page covers the US Bronco.

+0–3 whp (est.)
Medium$60–$1101–2 hrs
All Bronco mods

Why do it

Fresh plugs bring back lost power.

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

Steps

  1. Pull the coils

    • Take off the covers and lift out the coils.
    Watch this step (Bird Dog Off Road, on a 2.7L Bronco) (2:04–4:38)

  2. Swap the plugs

    • Swap each plug and refit its coil.
    Watch this step (4:38–7:48)

  3. Do the rest

    • Repeat for the rest.
    Watch this step (7:48–10:13)

  4. Pull the coils

    • Take off the covers and lift out the coils.
    Watch this step (Bird Dog Off Road, on a Bronco, same job) (2:04–4:38)

  5. Swap the plugs

    • Swap each plug and refit its coil.
    Watch this step (4:38–7:48)

  6. Do the rest

    • Repeat for the rest.
    Watch this step (7:48–10:13)

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

More Bronco mods