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Spark Plugs: Iridium Spark Plug | ACDelco

Step up to the latest spark plug technology with ACDelco’s Professional Iridium Spark Plugs. Designed to last more than
100,000 miles* in most applications, ACDelco Iridium Plugs are the ideal replacement for today’s top-performing


  • Iridium is one of the hardest metals used in spark plugs today, which allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration.
  • Latest evolution in high-performance plug electrode material.
  • Improved cold-starting and acceleration characteristics.
  • Reduced ignition-system voltage demand saves wear and tear.
  • New-vehicle applications using iridium plugs continue to increase.


Find out more about the ACDelco Professional Iridium Spark Plug and how it fits into the Starting and Charging System with the product facts below.


Uses a high-voltage spark from the ignition coil to ignite the air/fuel mixture inside the engine’s cylinders.

Signs of Wear:

Poor starting characteristics, decreased fuel economy, sluggish engine performance, excessive foiling or deposits on plug.

What It Does:

The Starting and Charging System starts the engine, maintains the battery’s charge and provides power to the electrical accessories while the engine is running.

*To the original retail purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco Parts for details.

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