Learning Center

• 

  How Do I Find a Colder or Hotter Plug?

  Each spark plug has a unique heat range. How can you find a plug that is a hotter or colder heat range?...

  Learn More
• 

  Can I Use Platinum, Iridium or Ruthenium Plugs with Nitrous Injection?

  Iridium - yes. Platinum - no. Ruthenium - maybe...

  Learn More
• 

  I Have a Modified Engine - Do I Need a Colder Spark Plug?

  Possibly...

  Learn More
• 

  How Long Do Autolite Iridium Plugs Last?

  Autolite Iridium XP bring the features of OEM iridium long life plugs to the market...

  Learn More
• 

  Wasted Spark Ignition Systems

  Does a wasted spark ignition system require special spark plugs?

  Learn More