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F30 Spark plugs Install Guide

Your F30

Pick your year to see what fits.

This page covers the US F30 and F32.

Restores lost power
Medium$70–$1101 hr
All F30 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.
  • Work on a cold engine. Do one plug at a time.
  • Work on a cold engine. Do one plug at a time.

Steps

  1. Remove the engine cover

    • Take it off.
    Watch this step (FCP Euro, on an F30) (2:17–3:41)

  2. Remove the cross brace

    • Take it off.
    Watch this step (3:41–4:13)

  3. Swap the plugs

    • Pull the coils and replace each plug.
    Watch this step (4:13–6:33)

  4. Torque the plugs

    • Torque them.
    Watch this step (6:33–6:52)

  5. Put it back

    • Refit the coils, brace and cover.
    Watch this step (6:52–8:30)

  6. Remove the intake pipe

    • Take it off.
    Watch this step (FCP Euro, on an N55) (1:27–4:46)

  7. Remove the coils

    • Pull the coils.
    Watch this step (4:46–6:01)

  8. Swap the plugs

    • Replace each plug.
    Watch this step (6:01–8:23)

  9. Put it back

    • Reassemble.
    Watch this step (9:33–11:36)

  10. Get to the plugs

    • Take off the covers and coils.
    Watch this step (Justin Buice, on a 340i) (0:53–3:44)

  11. Fit the new plugs

    • Replace each plug and torque it.
    Watch this step (4:41–7:54)

  12. Put it back

    • Reassemble.
    Watch this step (7:54–8:34)

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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