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How To install Replace Ignition Coils 25L 2002-06 Nissan Altima

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How To install Replace Ignition Coils 25L 2002-06 Nissan Altima

Created on: 2021-01-15

Learn how to replace ignition coils on your 02-06 Nissan Altima. 1A Auto will guide you with this video.

  1. step 1 :Removing the Ignition Coil
    • Remove the four 5mm Allen bolts from the engine cover
    • Lift the cover up and off
    • Remove the ignition coil wiring harness
    • Remove the 10mm bolt from the ignition coil
    • Lift the ignition coil up and out
  2. step 2 :Installing the New Ignition Coil
    • Place the ignition coil into the cylinder head
    • Replace the 10mm bolt on the ignition coil
    • Reconnect the ignition coil wiring harness
    • Replace the engine cover and tighten the four 5mm Allen bolts

Tools needed for replacement

  • Hex Wrenches

    5mm Hex Wrench

  • Ratchets & Related

    Ratchet

  • Sockets - Metric

    10mm Socket

Installation Video
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.

Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and the next time you need a part for your vehicle, think of 1AAuto.com. Thanks.

In this video, we're going to show you how to replace the ignition coil on this 2003 Nissan Altima with the 2.5L four-cylinder engine. It's the same process on the Altimas and Sentras with this engine from 2002 to 2006. You'll need a new ignition coil from 1AAuto.com, a 10mm socket, a ratchet, and a 5mm Allen bit.

To access the ignition coils, you first have to remove this engine cover. It's held in by these four 5mm Allen bolts. We'll just fast-forward as Don removes these. He's using a ratchet with a 5mm Allen bit. You could also just use a 5mm Allen wrench, as well.

Now, the cover just lifts right off. Here are your four ignition coils. It's held in with one 10mm bolt in the harness right here. Just push the tab and pull that harness off. Then remove that 10mm bolt. Now the ignition coil just lifts right up and out.

The old ignition coil is on the left; the new one from 1A Auto is on the right. You can see they're identical, and will fit exactly the same. Take the new ignition coil and just push it down into place. Then replace that 10mm bolt and reconnect your harness. Repeat this process for however many coils you want to replace. Now, all that's left is replacing that engine cover and those four 5mm Allen bolts.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    Hex Wrenches

  • 5mm Hex Wrench

  • Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 10mm Socket

2002 - 2006  Nissan  Sentra
2002 - 2006  Nissan  Altima
2004 - 2004  Isuzu  Rodeo

02-06 Nissan Sentra Altima 05-06 X-Trail 2.5L Ignition Coil (SET of 4)

2002-06 Nissan Altima Sentra 4 Piece Ignition Coil Set TRQ

Part Details:

  • 4 Piece
  • Features & Benefits
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