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Home | 05-10 Mustang | Engine Performance | Spark Plugs | NGK 7554 Iridium IX - 1 Heat Range Colder Spark Plug Mustang (mid 08-09)

NGK 7554 Iridium IX - 1 Heat Range Colder Spark Plug Mustang (mid 08-09)

Item Number:NGK-7554
Availability:Usually ships the next business day
Market Price:$15.99Our Price:$12.49
Gap Plugs:
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  • Description
  • Reviews
NGK Plugs are known for high performance applications. These Iridium IX Spark Plugs are one heat range colder than stock and feature a traditional style end for easy gapping. NGK suggests these plugs be used for lightly modified or mild boost applications. This is an ideal plug for nitrous, turbo, and supercharger applications.

Attention :
  • On or around Feb 2008 Ford changed designs of the spark plug. They are a completely different thread than used from 2005 until the transition sometime in 2008. If your 2008 Mustang was built in 2008 you should consult with us before you purchase. You can identify which plugs you have by looking at the boot color of the coil pack. Black boots are used in 2005 to mid 2008 which is NOT what these plugs are designed for. Brown boots are mid 2008 and newer which are these spark plugs.

Ordered the cold air and tuner combo. Best tune I have had. Really woke up my 5.0

- C. Faulkner

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