Mishimoto Ignition Coil for 2004-2010 Subaru Impreza, Forester, Legacy & Outback

Mishimoto ignition coil (MMIG-WRX-0404) restores spark for 2004-2010 Subaru Impreza, Forester, Legacy, Outback, and 2004-2006 Baja. OEM-level performance, lifetime warranty.

Description

The Mishimoto ignition coil, part number MMIG-WRX-0404, is a direct replacement designed to restore a weak or failing factory ignition coil on Subaru H4 engines. Built with a high-quality phenolic resin outer shell for durability in high-temperature engine bays, this ignition coil is engineered and tested to meet or exceed OEM Subaru performance standards.

A weak spark can lead to misfiring, rough idling, poor gas mileage, and even damage to your catalytic converter. Before chasing extra horsepower with modifications, it pays to make sure your ignition system is doing its job. This Mishimoto ignition coil refreshes that system, and when paired with a fresh set of spark plugs, drivers can expect improved engine startup, a smoother idle, and restored performance on both stock and modified vehicles. As part of the Mishimoto ignition coils lineup, this coil-on-plug (COP) unit is a straightforward upgrade path for anyone researching mishimoto ignition parts before tackling bigger performance projects.

Vehicle Applications

This Mishimoto ignition coil is a specific-fit part covering the 2004-2010 Subaru Forester and 2004-2010 Subaru Impreza, along with the 2004-2009 Subaru Legacy and 2004-2009 Subaru Outback. It also fits the 2004-2006 Subaru Baja. Coverage spans EJ251, EJ253, EJ255, and EJ257 engine codes, and applies to SG, SH, GD, GG, GE, GH, GR, GV, BL, and BP chassis codes.

Features

  • Designed and tested to meet or exceed OEM performance specifications
  • Improves engine startup, idle, and restores performance
  • Refreshes the ignition system, ensuring strong spark for stock and modified vehicles
  • High-quality phenolic resin outer shell ensures longevity in high-temperature environments
  • Backed by the Mishimoto Lifetime Warranty

Specifications

  • Brand: Mishimoto
  • Part Number: MMIG-WRX-0404
  • Ignition Type: Electronic
  • Coil Type: COP Coil
  • Coil Wire Included: No
  • Oil Filled: No
  • Universal Or Specific Fit: Specific
  • Grade Type: Standard Replacement
  • Length: 4.31 in
  • Overall Height: 3.07 in
  • Overall Length: 4.33 in
  • Color: Black
  • Terminal Type: Blade
  • Connector Gender: Female
  • Terminal Gender: Female
  • Engine Codes: EJ251, EJ253, EJ255, EJ257
  • Chassis Codes: SG, SH, GD, GG, GE, GH, GR, GV, BL, BP

Frequently Asked Questions

What vehicles does the Mishimoto ignition coil (MMIG-WRX-0404) fit?

It is a specific-fit ignition coil for the 2004-2010 Subaru Forester, 2004-2010 Subaru Impreza, 2004-2009 Subaru Legacy, 2004-2009 Subaru Outback, and 2004-2006 Subaru Baja.

Which engine and chassis codes does this ignition coil cover?

This coil covers EJ251, EJ253, EJ255, and EJ257 engine codes, and SG, SH, GD, GG, GE, GH, GR, GV, BL, and BP chassis codes.

What type of ignition coil is this?

It is an electronic coil-on-plug (COP) ignition coil. It does not include a coil wire and is not oil filled.

What can I expect after installing this Mishimoto ignition coil?

When installed along with a fresh set of spark plugs, you can expect improved engine startup, a smoother idle, and restored performance.

What material is the coil housing made from?

The coil features a high-quality phenolic resin outer shell designed for longevity in high-temperature environments.

Does this ignition coil come with a warranty?

Yes, it is backed by the Mishimoto Lifetime Warranty.

âš  WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.