All About Subaru Ignition Coils

Wondering about the ignition coil in your Subaru? This buyer’s guide will teach you everything you need to know about ignition coils, diagnosing a bad one, and replacing it.

What is an Ignition Coil?

An ignition coil converts 12 volt dc current to high voltage current. Many coils produce 30,000 volts or more. The high voltage current is delivered to the spark plugs, which use it to ignite the fuel in the cylinder. You can read more about how ignition coils work here.

New ignition coil

Ignition coils are important because they’re the component that delivers enough voltage to ignite the fuel. Without functioning ignition coils, your engine won’t be able to start.

How to Know if Your Ignition Coil is Bad

The symptoms of a bad ignition coil include:

  • Rough idling
  • Backfiring
  • Reduced power

If your car is showing any of these symptoms, it’s worth taking a few minutes to do an ignition coil test. To do this, you need to check the resistance of all the terminals on your ignition coil pack. You can see a detailed list of steps on how to do this here.

How Much it Costs to Replace Your Ignition Coil

It can cost anywhere between $80 and $300 to replace an ignition coil. The exact cost depends on several factors, including:

  • Your Subaru model
  • Where you get the job done: at a shop by a mechanic or at home by yourself
  • Where you buy the replacement part

The ignition coil for one model may cost more than the ignition coil for another model due to availability or the complexity of the coil. If you have a shop do the replacement for you, expect to pay over $100 for labor alone. You’d also have to pay about a 30% markup for the replacement part from a shop.

If you want to save money, we suggest ordering a replacement ignition coil from us, as we offer wholesale pricing on all genuine OEM Subaru parts. Then you can replace it yourself at home. Look up your Subaru model in our catalog to see how much money you could save on an OEM replacement ignition coil.

Here’s also a list of our top selling ignition coils:

  • Part No. 22433AA612: For 2011-2018 Legacy, Outback, and Tribeca models
  • Part No. 22433AA652: For 2013-2014 BRZ and XV Crosstrek models
  • Part No. 22433AA551: For 2004-2005 Impreza models
  • Part No. 22433AA580: For 2004-2010 Forester, Impreza, Legacy, and Outback models
  • Part No. 22433AA590: For 2009-2011 Forester and Impreza models

How to Replace Your Ignition Coil

Replacing your ignition coil is a straightforward process that takes about 30 minutes. You should be able to tackle this project easily as long as you have an OEM replacement ignition coil, all the right tools, and this tutorial. Note that the tutorial is geared toward the Forester, but it should still be easy to follow with any other Subaru model.